I found an old bike-lock key of mine and decided I would brainstorm a little and see if I could create a bottom-dollar cheap but effective keychain multitool. Recently on this Forum, I also suggested that a file-edge would be a good for manufacturers to add to their keychain tools, so I took my own advice and gave it a try (see pic below).
My keytool has both Phillips and slot-head screwdrivers at the corners, a hex bit driver, a box-cutter edge (the Phillips head corner), bottle opener (IQ test opportunity), and the file edge. Oh, and it also functions, of course, as a bike-lock key. Maybe at 3 a.m. (my prime thinking time) I'll come up with something else to add
Anyway, here's the tool:




