I know, the problem I have with my study materials is they are too precious to me; I never want to take them out of the house. :X (Actually, that's a lie -- during the last semester of school I had a Spanish workbook that I carried with me pretty much every day.) What I used to do when I worked days at the theatre (because days are OMG SO BORING) is copy out some kanji onto a sheet of paper, and then when I had some time at work I would rewrite the kanji over and over again. Exciting?! haha.