I’m certainly not the first to make one of these things, but I was bored and had a blast doing it. I reviewed coloradoclimber's method but ended up developing my own, more simplified variation to his method using just a plywood template and collar for the compartment, and then the router table to form the joint and lid. I also preferred to tune the final fit of my lid by hand with the block plane. That being said, his method is perfect if you want to turn out a bunch of these. I purposely cut the blank out of the board to include a few of the worm holes in the ambrosia maple and I am delighted with the result. The piece is 2 in X 3 in X 3/4 in with a 3/8 in depth on the compartment. The lid is literally a shave under 1/4 in. Finished with a few coats of tung oil.