This is a very simple, basic "Bypass Box" I built 5 or 6 years ago:
Alligator clips for Input, Output, +V, Ground, with an LED and a bypass switch.
Easy to go from guitar > bypass box - breadboard > amp.

From this picture you should be able to see that the alligator clips are soldered onto a board I etched with 4 straight and wide traces.
2 screws, some solder, and a lot of hot glue hold it all together.

And now I can't seem to find my "Audio Probe 2.0" I built a few days ago

Did find the crappy "Audio Probe 1.0" I built awhile back though.
And I have a board I need to trace tonight
