Classy, Hip-Thrust-Powered MP3 Belt Buckle
Gizmodo has a step-by-step project to build your own super-classy, gold belt buckle with an MP3 player that activates and plays when you do that voodoo that you do so well (with your hips).
The hard things to find are an MP3 decoder and an accelerometer. Once you’ve got those, you’ll need a few more basic, bits and pieces before you can piece together. Head to Gizmodo for the instructions, then just sit back, start firing your hips, and rake in the ladies.