This idea came to me, and it is so easy
Fabric of choice, I chose a small pattern that I didn't have to worry about centering (1/8 yard was enough for 13)
Unfinished wood hardware (I found mine at Walmart, a pack of 8 was a little over $8.00)
Coat your knob with Mod Podge
Take your fabric, I cut mine 3.5" square, and place on the knob.
Wrap the fabric around the knob, smoothing as you go, and gathering around the base.
Coat with Mod Podge again, over top the fabric