I have a $60 Walmart e-gift card, ~$44 in Best Buy, and I think $50 in Gamestop. I always forget I even have the gift cards. I keep them all in one central location, but I check there so infrequently that I never think to use them, haha. I actually had $100 from Best Buy until I bought the Starcraft 2 CE a couple of days ago.
In addition to that, I think I have about $50-100 to a small Japanese restaurant chain called Haru, $25 to a local independent theater, 6 fandango codes for free tickets, 4 AMC gold tickets, 4000 unredeemed Microsoft Points, and about $350 in PSN cards.
I plan to redeem my MSP, now that I'm down to around 3000. I never like having too much in my account at any given time for some reason. The PSN cards were bought over the years to cash out various store credit and to end K-Mart coupon trains, but I haven't gotten around to selling any of them yet!