I've got two digital multi-effects pedals (Boss GT-5, Digitech BP-200) that I'd prefer to bypass when they're not needed, so using a Marshall amp's distortion switch, I made a 2-loop bypass switch. I bought parts enough to do three loops, but couldn't figure out how to cram all the parts in the box.
I don't even have a Marshall amp, never have. Heck, I don't even have a proper guitar amp, even though I play guitar and bass about equally. Both use same effects chains and play out of a Fender bass amp.
Start to finish:
2-loop bypass switch, Photobucket
Two loops, one LED for each and one to show that the 9V adapter is working, even though it works just fine without it. Going to color them with rad glittery fingernail polish if my wife ever relinquishes her grip on the bottles).
I decided to move switch that lived in the original pedal's hole, as having two so close to each other was terribly awkward. I'm going to shape some black plastic and affix it to the top to cover the hole, thus keeping junk out.
End product:
