Alot of hacks around here!
An extract of some of those:
-Couldn't time the shutter right when photographing lightning. Used my oscilloscope to measure its electrical influence and anytime a peak is detected, it actuates the shutter.
-Using a lock as a heatsink for a overheating display driver ic.
-Hacking two USB ports together to get more power.
-Display module was too tall with header pins. Moved its back components to the main board and soldered the module flat onto it by flowing solder down its connecting holes.
-Not me but still interesting: Back on ye olde times when paid tv contained a disruptive H or VSYNC signal only their paid tv box could filter, my electronics prof. analyzed it and built the required comb filter on his own. Even sold some on the black market.