Don't know what i should get for my cosmos

You shouldnt be spending it on case accessories, id put it towards a CPU cooler. (if yours is stock) or maybe some ram.

If your going to buy a cpu cooler do it right and get something like a T.R.U.E

http://www.frozencpu.com/products/75...t_775_AM2.html

or Prolimatech

http://www.amazon.com/Prolimatech-Co...7&sr=8-3-fkmr0

if you are dead set on only spending $50 dollars you can go with mugen 2

http://www.amazon.com/Scythe-MUGEN-2...9766758&sr=1-1

Don't you know that putting lights makes your computer run 4% faster!

Seriously though, if you don't overclock at all, there is no sense in spending almost 100 bucks to drop your temps down a few degrees. If you have room for case fans, get those, if you need more ram, get that (anything under 3gigs is too low these days, if you game). Otherwise I would say lights, or a new hdd once you get a bit more money. a 1TB drive is only around 100 bucks.

Or just get a bunch of booze.

8. i am sitting and watching H a rry Po tter