Early 90's were more fun. I modified DOS command.com file to change the outputs it prints, drilled holes into laptop to attach broken hinges, break electronic garbage to salvage wires and interesting things, disassemble disk drives, ...
Amazing what you learn when you have no other distraction xD
1. there was a disk notcher (the Nibbler?) that would DOUBLE the capacity of a 5 1/4 floppy!
2. you could just use a regular paper hole punch and a few select clips to do the same thing!
All my C64 floppies had faint parallel pencil lines across the top to line up the slots and what looked like mouse-nawed holes on one side.