Sandy, these don't need to felt. In fact, they're called Non-Felted Slippers.
Thanks for the link, Claire, I think I'll order a couple balls to play with and see how it works out. There are lots of colors too and that's good.
Cheating is an option. . . . Cheaters never win and winners never cheat, but smart knitters who want to retain an iota of sanity do, cheerfully. ~~Kory Stamper