https://www.thingiverse.com/thing:6075723 https://youtu.be/KmCcjxr04Fs
My arm was getting tired, so I decided to over-engineer my coffee grinder. It already runs on a standard screwdriver bit hex, so I was actually pretty surprised that nobody else beat me to it.
It’s not too bad, I stick with darker roasts and with the smaller dose it’s usually under a minute to grind. I’m in a studio, so my drill is actually more accessable now, if a bit harder to hold.