Once when I was in Monterey, I actually froze my credit cards. Literally. I wrapped them in a sandwich bag and then wrapped that sandwich bag in duct tape. Then I immersed it in a jar of water and stuck it in the freezer. It prevented me from using my cards (and since I don't have a good memory, I never committed any of my card numbers to memory) and I got the balance down.
It totally works. I think I got the idea from Suze Orman on PBS...
