I don't feel like I've done anything productive in programming recently. What's something I ...

I can really recommend implementing a simple neural network with a genetic algorithm yourself and then applying it to simple games you make in Pygame.
https://www.google.com/url?rct=j&sa=t&url=http://scifiaddicts.com/p/learnpython/comments/q2f2hh/i_dont_feel_like_ive_done_anything_productive_in/&ct=ga&cd=CAIyGmUxOTc3ODMwMTUxMGEzOTU6Y29tOmVuOlVT&usg=AFQjCNFTFJ5aW8Jxn9iMvspUBafL_ga56A