Design Patterns Assignment Confusion

For college i am currently doing an assignment and it requires me to implement a minimum of FIVE Design patterns(Singleton, Decorator, Observer, Facade, Proxy) you have studied to provide an application of your choice. The functionality and requirements are up to you,but whatever application you choose to build must be designed appropriately for that application and must provide all expected functionality for an application of that kind. Additionally, the patterns implemented within your application should make sense for the situation. this is the question and am so lost searched the web for hours and cannot find an idea or solution for this as all examples implement each pattern individually using different programs for each, any ideas where I can find an example that implements multiple patterns in one example or can anyone help me! Thanks in advance.