To go with the Key/Phone Caddy these fobs make good use of those bits you just can't throw away.
I start with a blank 2” x 2” x 1/2”, drill a hole at one corner and then
put it in the G3 lathe chuck and hollow it out. Bowl turning 101
I then set the band saw at 10 degrees and shape the outside.
I also made some out of plastic and polished them with a small buffer mounted in a drill chuck of the lathe.