[kcent]

I love re-interpreting existing tools or ideas as practice and fun, like how an artist does studies of master artists' work to improve their technical skills or just to gain some perspective.

So perhaps if you can't think of something new, try re-inventing something that exists, in a new language or one you already know and like?

Though I'm partial to people building doodads with things like Arduinos and Raspberry Pis. :)