That undercover program has $10 off a license if you're a student.
I've got renters insurance through my parents policy, which is nice, although I don't know the details, it should be covered.
I'd get one of those locks, even if people say you can rip the computer off, still get one. We don't keep our houses unlocked because the locks can be picked, or our cars unlocked cause someone can break the window. Get it, it'll lock your computer, and if a thief tries to take it, at least it will slow them down/damage the computer if they take it. A computer that looks like it's been ripped out from a lock would be a lot harder to sell and that in itself could deter the theft.