What to do with a little money?

[DWarrior]

Hi, I'm a college student and I managed to put together around 20k this semester. 10k will have to go into paying for my school, but I'd like to be able to do something with the remaining 10k.

Unfortunately, I've never had this problem before, so I don't know what to do. Is there a business I can start with 10k, or should I just save it? So far this semester, gambling has been my only source of income, but I'd like to start getting into other things, so I won't mind taking some time to run a vending machine-type business. Any suggestions?

I saw Bankrate.com has 6-month 4.6% APY CDs, I'm planning to purchase those until I can figure out what to do.