I recently decided to go through all of my ukuleles and replace the synthetic nuts and saddles with bone ones. After going through two of them, my fingers are just in too much pain from shaping them from blanks. I know belt sanders can be had for $40 these days but I just wanted a small sander to work with these nuts and saddles.

So I designed this little Dremel (mine is a Dremel 300-1) holder and table to do just this with a grinding stone or sanding band adapter. And it works great!