So, #Confab2023 last week was a fantastic parade of case studies and insights. Also, a fantastic parade of nerdy content strategy adjacent apparel. Thanks to some of the other attendees, we've got a list of some of the sources for the best nerdy shirts there:
https://www.redbubble.com/people/nerdhaus/shop?collections=1222161
https://www.criterion.com/shop/collection/398-criterion-channel-genre-tees