by cymon, published
My sons wanted hypnorings like in the Captain Underpants books. They made color illustrations and everything, so I obliged.
And yes, I printed up a couple extras that I put up for sale on Etsy. https://www.etsy.com/listing/109577605/glow-in-the-dark-hypnoring
Hold up infront of your elementary school principle and say "You will obey my every command, whenever you hear fingers snap you will transform into Captain Underspants".