I finally did it. I made a felted bag. Initially I pretended I was making the dicebag my husband asked for, but we both realized that was a joke once I finished felting it.
He was telling me that it was going to be too big all along.
So then I felted it. It didn't get small enough on the warm cycle. I switched to hot. That really did the trick. I sewed up the bottom corners, and....
A bag that my son thinks is a hat.