Web Design Final Project Idea?

[needhelp]

I'm taking a college course called advanced web design. We have been learning Javascript, jquery, how to use APIs, how to create responsive websites etc. For my final project I was given the option to come up with my own project but I having difficulties coming up with an idea. The only requirement for the final project is that you must create something that uses the APIs of a website, and jquery. We learned how to use the API of flickr ( which allowed to type something and it will display a gallery of picture with that tag) and twitter ( to display all the tweets with an specific hash). Anyone knows any other website which I can use the API to create something cool?