diff --git a/lib/db.py b/lib/db.py
new file mode 100644
index 000000000..7383d92fe
--- /dev/null
+++ b/lib/db.py
@@ -0,0 +1,9 @@
+# db.py
+# engine and sessionmaker are created here
+
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+
+engine = create_engine('sqlite:///freebies.db')
+Session = sessionmaker(bind=engine)
+# session = Session()
\ No newline at end of file
diff --git a/lib/debug.py b/lib/debug.py
index 4f922eb69..fe83ed094 100644
--- a/lib/debug.py
+++ b/lib/debug.py
@@ -1,9 +1,84 @@
 #!/usr/bin/env python3
 
-from sqlalchemy import create_engine
+from db import Session
 
-from models import Company, Dev
+from models import Company, Dev, Freebie
 
-if __name__ == '__main__':
-    engine = create_engine('sqlite:///freebies.db')
-    import ipdb; ipdb.set_trace()
+session = Session()
+import ipdb; 
+
+# TEST. Run these in ipdb, these # => indicate expected results.
+
+# Relationship Attributes and Methods
+
+# Freebie
+# # Access the first freebie instance in the database
+# freebie = session.query(Freebie).first()
+# freebie
+# # => Freebie(id=1, item_name=others, value=209, company_id=1, dev_id=8)
+# Get the Dev who received the freebie
+# freebie.dev # == returns the Dev instance for this Freebie.
+# # => Dev(id=8, name=Jennifer Hernandez)
+# freebie.dev.name
+# # => 'Jennifer Hernandez'
+# freebie.company # == returns the Company instance for this Freebie.
+# # => Company(id=1, name=Carter-Brandt, founding-year=1925)
+
+# Company
+# # Access the first company instance in the database
+# company = session.query(Company).first()
+# company
+# # => Company(id=1, name=Carter-Brandt, founding-year=1925)
+# company.freebies  # == returns a collection of all the freebies for the Company.
+# # => [Freebie(id=1, item_name=others, value=209, company_id=1, dev_id=8), Freebie(id=2, item_name=have, value=346, company_id=1, dev_id=12), Freebie(id=3, item_name=same, value=377, company_id=1, dev_id=2)]
+# company.devs  # == returns a collection of all the devs who collected freebies from the company.
+# # => [Dev(id=8, name=Jennifer Hernandez), Dev(id=12, name=Corey Wu), Dev(id=2, name=Willie Goodman)]
+
+# Dev
+# # Access the first dev instance in the database
+# dev = session.query(Dev).first()
+# dev
+# # => Dev(id=1, name=Chelsea Long)
+# dev.freebies  # == returns a collection of all the freebies that the Dev has collected.
+# # => [Freebie(id=15, item_name=light, value=151, company_id=5, dev_id=1), Freebie(id=28, item_name=apply, value=87, company_id=8, dev_id=1), Freebie(id=40, item_name=watch, value=189, company_id=11, dev_id=1)]
+# dev.companies  # == returns a collection of all the companies that the Dev has collected freebies from.
+# # => [Company(id=5, name=George LLC, founding-year=1914), Company(id=8, name=Thomas, Anderson and Larson, founding-year=2003), Company(id=11, name=Hall Ltd, founding-year=1938)]
+
+
+# Aggregate Methods
+# Freebie
+# print(freebie.print_details()) # using our freebie instance. If you get an error: check print(freebie.__dict__), run freebie = session.query(Freebie).first() first or quit and restart python debug.py
+# # => Jennifer Hernandez owns a others from Carter-Brandt
+
+# Company
+# Testing give_freebie(dev, item_name, value) method in Company class.
+company = session.query(Company).first()
+dev = session.query(Dev).first()
+freebie = company.give_freebie(dev, item_name="T-shirt", value=70, session=session)
+print(freebie.print_details())
+# # => Chelsea Long owns a T-shirt from Carter-Brandt
+# company.oldest_company() 
+# # => Company(id=2, name=David-Boyd, founding-year=1886)
+
+# Dev
+# dev = session.query(Dev).first() get first dev
+# print(dev.received_one('gas'))
+# # => False
+# print(dev.received_one('light'))
+# # => True
+
+# Testing give_away(dev, freebie) method in Dev class.
+dev1 = session.query(Dev).filter(Dev.name == "Jennifer Hernandez").first()
+dev2 = session.query(Dev).filter(Dev.name == "Anita Romero").first() # id 3 in devs table
+freebie = session.query(Freebie).first() # freebie to give away. According to the freebies table, the first conform to dev_id 8, "Jennifer Hernandez"
+
+# Ensure the freebie belongs to dev1 before trying to give it away
+if freebie.dev == dev1:
+    updated_freebie = dev1.give_away(dev2, freebie)
+    print(f"Freebie '{updated_freebie.item_name}' has been transferred to {dev2.name}.")
+else:
+    print(f"Freebie '{freebie.item_name}' does not belong to {dev1.name}.")
+
+# session.commit()
+session.close() # close
+ipdb.set_trace()
diff --git a/lib/freebies.db b/lib/freebies.db
index 12beb1c96..e32700f64 100644
Binary files a/lib/freebies.db and b/lib/freebies.db differ
diff --git a/lib/migrations/versions/6cf5c7fb78fa_leverage_freebie_as_an_association_table.py b/lib/migrations/versions/6cf5c7fb78fa_leverage_freebie_as_an_association_table.py
new file mode 100644
index 000000000..8a0be5838
--- /dev/null
+++ b/lib/migrations/versions/6cf5c7fb78fa_leverage_freebie_as_an_association_table.py
@@ -0,0 +1,28 @@
+"""Leverage Freebie as an Association Table
+
+Revision ID: 6cf5c7fb78fa
+Revises: 719ebb52e4c8
+Create Date: 2025-05-25 13:20:50.773113
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '6cf5c7fb78fa'
+down_revision = '719ebb52e4c8'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    pass
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    pass
+    # ### end Alembic commands ###
diff --git a/lib/migrations/versions/719ebb52e4c8_add_freebie_model.py b/lib/migrations/versions/719ebb52e4c8_add_freebie_model.py
new file mode 100644
index 000000000..c0f7b21a3
--- /dev/null
+++ b/lib/migrations/versions/719ebb52e4c8_add_freebie_model.py
@@ -0,0 +1,37 @@
+"""Add Freebie Model
+
+Revision ID: 719ebb52e4c8
+Revises: 5f72c58bf48c
+Create Date: 2025-05-25 10:19:38.293281
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '719ebb52e4c8'
+down_revision = '5f72c58bf48c'
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('freebies',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('item_name', sa.String(), nullable=True),
+    sa.Column('value', sa.Integer(), nullable=True),
+    sa.Column('company_id', sa.Integer(), nullable=True),
+    sa.Column('dev_id', sa.Integer(), nullable=True),
+    sa.ForeignKeyConstraint(['company_id'], ['companies.id'], name=op.f('fk_freebies_company_id_companies')),
+    sa.ForeignKeyConstraint(['dev_id'], ['devs.id'], name=op.f('fk_freebies_dev_id_devs')),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('freebies')
+    # ### end Alembic commands ###
diff --git a/lib/models.py b/lib/models.py
index 2681bee5a..cf89e40ce 100644
--- a/lib/models.py
+++ b/lib/models.py
@@ -2,6 +2,9 @@
 from sqlalchemy.orm import relationship, backref
 from sqlalchemy.ext.declarative import declarative_base
 
+from db import Session # import session
+session = Session() # start session
+
 convention = {
     "fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
 }
@@ -16,8 +19,23 @@ class Company(Base):
     name = Column(String())
     founding_year = Column(Integer())
 
+    freebies = relationship('Freebie', backref=backref('company'))
+    devs = relationship('Dev', secondary='freebies', back_populates='companies', viewonly=True) # leverage Freebie as join/association table for a many-to-many relationship between Company and Dev
+
+    def give_freebie(self, dev, item_name, value, session): # using session from debug.py to avoid session conflicts
+        feebie = Freebie(dev=dev, company=self, item_name=item_name, value=value) # set dev=dev and company=self. The Company and the Dev will be linked through the foreign keys company_id and dev_id. We can also look up the ids and use them directly
+        session.add(feebie) # Add freebie to the session
+        session.commit() # Commit changes
+        return feebie
+
+    @classmethod
+    def oldest_company(cls):
+        return session.query(Company).order_by(Company.founding_year).first()
+
     def __repr__(self):
-        return f'<Company {self.name}>'
+        return f'Company(id={self.id}, ' + \
+            f'name={self.name}, ' + \
+            f'founding-year={self.founding_year})'
 
 class Dev(Base):
     __tablename__ = 'devs'
@@ -25,5 +43,41 @@ class Dev(Base):
     id = Column(Integer(), primary_key=True)
     name= Column(String())
 
+    freebies = relationship('Freebie', backref=backref('dev')) # one-to-many relationship
+    companies = relationship('Company', secondary='freebies', back_populates='devs', viewonly=True) # viewonly set to True to prevent 'Dev.freebies' from copying column devs.id to column freebies.dev_id, as it causes conflicts with the relationship(s)- the one-to-many relationship above
+
+    def received_one(self, item_name):
+        return any(freebie.item_name == item_name for freebie in self.freebies) # loop all Freebie instances associated with the class(Dev) since it defines the relationship, acessible in freebies
+    
+    def give_away(self, dev, freebie):
+        if freebie.dev != self: # feebie should belong to the dev giving it away
+            raise ValueError(f"The freebie '{freebie.item_name}' does not belong to this dev.")
+        freebie.dev = dev
+        return freebie  # Return the updated freebie
+
     def __repr__(self):
-        return f'<Dev {self.name}>'
+        return f'Dev(id={self.id}, ' + \
+            f'name={self.name})'
+    
+class Freebie(Base):
+    __tablename__ = 'freebies'
+
+    id = Column(Integer(), primary_key=True)
+    item_name = Column(String())
+    value = Column(Integer())
+
+    company_id= Column(Integer(), ForeignKey('companies.id'))
+    dev_id= Column(Integer(), ForeignKey('devs.id'))
+
+    def print_details(self):
+        return f"{self.dev.name} owns a {self.item_name} from {self.company.name}"
+
+    def __repr__(self):
+        return f'Freebie(id={self.id}, ' + \
+            f'item_name={self.item_name}, ' + \
+            f'value={self.value}, ' + \
+            f'company_id={self.company_id}, ' + \
+            f'dev_id={self.dev_id})'
+
+            
+session.close() # close the session
diff --git a/lib/seed.py b/lib/seed.py
index b16becbbb..1a285ca10 100644
--- a/lib/seed.py
+++ b/lib/seed.py
@@ -1,3 +1,67 @@
 #!/usr/bin/env python3
 
 # Script goes here!
+
+from faker import Faker
+import random, choice
+
+from db import Session # import session
+
+from models import Company, Dev, Freebie
+
+
+session = Session() # start session
+
+session.query(Company).delete()
+session.query(Dev).delete()
+session.query(Freebie).delete()
+
+fake = Faker()
+
+companies = []
+for i in range(15):
+    company = Company(
+        name=fake.unique.company(),
+        founding_year=random.randint(1870, 2025)
+    )
+
+    # add and commit individually to get IDs back
+    session.add(company)
+    session.commit()
+
+    companies.append(company)
+
+devs = []
+for i in range(15):
+    dev = Dev(
+        name=fake.name()
+    )
+
+    # add and commit individually to get IDs back
+    session.add(dev)
+    session.commit()
+
+    devs.append(dev)
+
+freebies = []
+for company in companies:
+    for i in range(random.randint(1,5)):
+        dev = random.choice(devs)
+        if company not in dev.companies:
+            dev.companies.append(company)
+            session.add(dev)
+            session.commit()
+        
+        freebie = Freebie(
+            item_name=fake.unique.word(),
+            value=random.randint(40, 400),
+            company_id=company.id,
+            dev_id=dev.id
+        )
+
+        freebies.append(freebie)
+
+session.bulk_save_objects(freebies)
+session.commit()
+
+session.close() # close session