Keeping an eye out for active GB stuff webshops, and here we are again! Not licensed branded products, but looks good for playing 🙂
https://matsbymars.com/collections/guild-ball-gaming-playmats

Disclaimer!
This is not a paid cooperation, just me wanting to spread the word. I would be only even more happy to have more stores to refer to. Post links in a comment below or reach out to me on discord/email/facebook 🙂