Here’s something which isn’t a good idea with breadboards:
I used a socket with wire-wrap pins to be able to connect a few wires yet still be able to use the whole thing in a breadboard. If you look closely, you can see that the 5-pin metallic connectors inside the breadboard are pushed out – making the adhesive separate from the rest. Whoops.
Wire-wrap pins are clearly too thick to be pushing into breadboards…