I've popped on to dailybitcoins.org.
It's a small amount unless you get the jackpot, but you can do it every 24 hours.
And it definitely pays out.

Here's my referral if you're feeling generous http://dailybitcoins.org/?ref=1MZtsqsw5rSYr5M6zZaQvh8NJCgjfuUN89

Outside of that you could mine or trade