What cool tech stuff can I buy for $50?

I have a fifty dollar gift card to amazon and I want to get something cool and techy but not over $60. I already have a laptop, iPhone, iPad and TV. Is there something cool I can/should buy? I'm a 15 year old girl.

Get some head phones or a laser pen(good 4 if you have dog or cat to play wiv)

You could get headphones (http://www.amazon.com/gp/product/B00007E7C8/

or a bluetooth speaker (http://www.amazon.com/gp/product/B0083UU1OO/

or a midi keyboard (http://www.amazon.com/gp/product/B002M8GBDI/

or a lot of other stuff (http://www.amazon.com/s/?_encoding=UTF8&bbn=172282&camp=1789&creative=390957&linkCode=ur2&qid=1369786274&rh=n%3A172282%2Cp_36%3A4000-5000%2Cp_72%3A1248879011&tag=onlyou02-20)