Google Opinion Rewards, How much have you gotten?

So I found out about and downloaded the Google Play Rewards app about a month ago, and so far I've answered about 5 surveys for a total of $2.09. I'm just curious, how much have other people who've gotten the app made so far? What's the coolest thing you've gotten with your "free" money? Or what are you saving up for? Satisfy my curiosity! Please.

Interesting side note: I also put this app on my nexus 10 tablet, just for kicks, and one of the surveys I received only showed up on it, and not my S3. Just glitch? Or maybe intentional to prevent multiple submissions of the same survey.