I just got invited to a Halloween party this weekend. That's great; it means I have friends! But I don't have a costume. This happens every year—I toss around great conceptual costume ideas, but then October 24th rolls around, a week before Halloween, and I've got nothing. Some of you are in the same situation. Sure, if you've got two iPads you've got a great creepy costume, but most people in this spot usually settle for a half-assed reappropration of street clothes, or they run to a big-box store and pay full price for a outfit they only wear once.