If you've got 30 minutes to an hour to kill, and $3.34 sitting in a paypal account doing nothing much, then do I have a game for you!
http://www.windosill.com
Absolutely entrancing. Not really a game but more like a digital toy. If you go to that website you can play half way through and you'll know if you want to spend the 3 bucks plus exchange rate(which got it up to the $3.34 for me)
I finished it in half an hour but went back and played with certain rooms for another 30 minutes. I'll probably come back to it and fiddle with it some more next week too..
The rest of his stuff is really good too. Vector Park. It blows me away how creative some people can be...
So yeah, give it a try!