On Sunday afternoon I was messing around with "whittling" a ball in cage.
I started by splitting off a hunk of walnut with an axe.
Then I used a draw knife and a couple different planes to get two sides flat and square enough to take the wood over to the table saw.
I cut a nice 1.25" square blank off to work with.
I drew a pattern on each side, based on a photo I saw online. I was going to need to carve out the areas on either side of the ball to hollow out the cage. I started by drilling a big enough hole to pass the blade of my coping saw through, and then I cut into the corners to make paring with a chisel easier.