An Inktober 2018 sketch using the unofficial prompt knight, although it would also work for the official prompt guard. A medieval knight’s helmet.
Available to buy at the following online stores:
TeePublic (US & UK)
You can find the design on t-shirts in most stores, but also on other products e.g. hoodies, mugs, clocks, duvet covers, shower curtains, bags, phone cases, notebooks etc.