Just in case...
My flatmate loved this felt knuckle-duster and wanted me to make one. Its solid felt. Since I'm not that adeft at felting, I stitched one out of a felt square. I was intending on stuffing it with fibre-fill but it ended up too small. Its a good fit though and I think it looks alright.
Libby W. posted this project as a creation without steps
Here are some similar tutorials to help you make this one!