My birthday was on Tuesday and I got about three musical cards this year. Though they were good for a short laugh, I felt bad that my siblings had spent $5 on a card just because it looped a sound over and over again. Luckily, Justin from Instructables has come up with a way to turn your useless birthday card into a sweet speaker for your MP3 player.
Essentially, you’ll be dismantling the card and wiring it up to a pair of headphones. Once that’s done, you’ll do a little cutting, wiring and next thing you know, you’ll be the proud new owner of a piece-of-shit speaker. Congratulations! It’s DIY!