This solution contains all my example projects for my blog's Daily Design Pattern series, and is also used in my Demonstrating Common Design Patterns with C# and Food presentation.
This series covers 22 of the Gang of Four's patterns. Here's the individual posts:
Creational Patterns:
Abstract Factory
Builder
Factory Method
Prototype
Singleton
Structural Patterns:
Adapter
Bridge
Composite
Decorator
Facade
Flyweight
Proxy
Behavioral Patterns:
Chain of Responsibility
Command
Iterator
Mediator
Memento
Observer
State
Strategy
Template Method
Visitor