What to buy with that RM 200 vouchers? :)

Last week we got that RM 200 book vouchers. The first thing that I want to buy is a new calculator. My old one is near damage state, that old one is near 3 year though. I hope to purchase a calculator that suits my needs. Books? I don't think I need one. The main reason is, I've bought my books for the second semester. These vouchers are too late, and yet their expiring date is due on March 2012. If the vouchers are given away during the semester break, for sure I would enjoy spending them for books. Unfortunately, I have to use my own money to purchase them, rather than waiting for the vouchers. On the bright side, the vouchers can be used to buy electronic items such as mouse, headphones, pendrives and so on. Coincidentally, I REALLY need one pendrive with large memory storage capacity for my own use, as our course requires a lot of assignments and group works. So, what I want to purchase with that vouchers are calculator, a pendrive and..maybe some pens or pencil. Or maybe some books, just in case I need more KNOWLEDGE.. :)