How to spend a Best Buy gift card?

I just traded in my Galaxy S III and my iPhone 4S and got $340 dollars for the pair which was pretty good considering the no-hassle transaction. The S III had some issues but they still took it, so I was pretty happy with what I got. Now the question is what to spend it on. I've been looking around and have been having trouble finding cheap, but great gear to spend it on. I don't want a phone (I have an HTC One), but would love some cool accessories and I'm also taking a look at the Nexus 7. Any advice or great products that you guys recommend?