Here's a good one. You can send just a square or two, or a whole bunch, to some folks who will join them into blankets for AIDS-orphaned children in Africa. They are asking for 8x8 squares (which is quick to do). Heck, you can do THAT out of your leftovers. And all it costs after that is a mailing envelope and international postage. You don't even have to sew the darn squares together!
Worth a look, knitters!