Is there a way that you could make a "glitch" switch on a DMG? So that if you switch it, it'll make the sound chip go crazy and do all kinds of random, odd things, but when you turn it off it goes right back to normal?
Also, where could you solder LEDs to the PCB so that they light up? Would they attach to somewhere near the batter terminals? Or does it matter at all? Can you solder it to any connection on the board to get electricity going through it?
Sorry about these noobly questions, I'm just not finding much help from google!