I bought this sleeping bag. It's pretty warm and only weighs 18 ounces, packs really small and includes a compression sack.
http://www.sacattack.com/items/776
Only 60 bucks at the time, if you want it you can still get 40% off.
Check out the other sleeping bags and tents you can get 40% off on by doing a search on
www.sacattack.com
Or if you are patient you can wait til more deals pop up on
www.steapandcheap.com for up to 70% off.