Know any good Sweepstakes?

I usually go for ones run by businesses, like the recent one done by Mastercard (closed now). I'm in mycokerewards.com where I have to enter codes from packages and bottle tops. I then redeem those codes for prizes or sweepstakes entries. Since I drink a ton of diet coke I have lots of codes!!! The prizes aren't that great, but I've been using my points to enter their contests for travel.