I interviewed the guy who makes the shirts here:
https://steemit.com/bitcoin/@bitcoinmeister/cryptograffiti-earns-bitcoin-with-his-merchandise-and-creates-value-in-the-cryptocurrency-space-start-your-own-bitcoin-biz
Look at that link and find his Twitter info and where to buy the shirts with my Meister discount code. COntact him. He may be up for making a Steemit shirt.