If you like CashCrate and want to find more sites like it here is a list of some of the better ones.
More sites like CashCrate:
Another one of the sites like CashCrate I found is Inbox Dollars. You can get paid to do all the things you normally do like play games online, read emails, take surveys, and other things. You get a $5.00 bonus for signing up and it is always free. They pay by check and will never ask you for money.
If you are looking for sites like CashCrate you will surely like TreasureTrooper. It has a great interface with up to the minute stats, a very active forum, and even contests and treasure hunts. You can get paid by check or PayPal and in 2007 they paid out over $1,000,000.00 to their members. I have just started with Treasure Trooper and I can say that it looks great so far and I will start posting my earnings once I have them!