That Ewoks t-shirt looks well boss 😃
For the ‘76 Cast & Crew’ t-shirt…
https://www.teepublic.com/de/t-shirt/5476603-og-mcquarrie
(I’ve bought from them before (all the way from the US to the UK - good quality t-shirts, large range of colours and sizes, and styles - v-neck, tri-blend, ringer, heavyweight etc, decent prices and occasional sales / offers. Also offer mugs, stickers, hoodies etc too 😃)
Edit: Lucasfilm did a nice piece on their website about the above logo and t-shirt:-
https://www.lucasfilm.com/news/history-in-objects-early-star-wars-logo-t-shirt (from February 2021)
This one of the old early-mid 70’s alt logo is pretty decent too…
https://www.teepublic.com/t-shirt/6907423-ralph-mcquarrie-star-wars