Imagine that you love what you did for a living so much that you go home at night and do more of it outside of your job. Artists are like that. Ilana Schwartz is an animator for several shows on Nickelodoen, but in her spare time she doodles on paper coffee cups.
Her work displays quite a range of styles. These are the paper cups you'd never throw out if you had one! See a collection of Schwartz's cups at TVOM.