I've been making some random cup cozies for the church craft sale. These are all made from acrylic scraps and patterns of my own concocting. Hopefully I'll have some time to make some more - they're pretty quick, and there are some great patterns available off of Ravelry that I'd like to try.
I'd also like to make some of the cozies that are for mugs with handles. These are more for cups you'd get at the coffee shop - save some paper by not taking a heat sleeve.