3" Widgy Pry Bar
It is simple, strong, and tremendously useful. Use it for everything from small prying jobs to opening the tape on boxes and to get that little bit of extra leverage you need.
At 3" long it's unnoticed on your keys until you need it, and it is always at the ready. County Comm has multiple versions in different lengths, it's surprising how much utility one can find in such a small piece of metal.