If you’ve got a link to an excellent technical-art themed T-shirt, post it here.
There’s always the [Official Tech-artists org teshirt shop] (https://shop.spreadshirt.com/techart/) at Spreadshirt (proceeds go to keep the servers up and running, btw).
Note that spreadshirt has shops in Canada and Australia too… for some reason, however, the UK version does not show our store. Working on it.