Off the top of my head (pun!), I got a gash scar for five stitches worth.
Got that just before 7 AM one Sunday morning when I got done working the night shift at a Super 8 Motel during the college years. A guy walked in, mooched the free coffee, and when I wasn't looking... BAP! He clubbed me in the head, jumped the desk, and demanded the cash in the drawer. Clubbed me in the knee, too, when I didn't move fast enough.
I was about to pull out of my pocket the Mace spray we have for this sort of thing... but the cap slipped off, exposing the bare tube. While trying to get it back on, the mugger saw that, figured I had a gun stuck there, and leapt back over the desk, and out the door without a cent.
Thankfully, that incident finally got us a desk security window. The motel had been demanding from the owners for a while.