Since SO content has the cc-wiki license, it can be remixed to make fun swag. I'm considering setting up a shop to sell t-shirts, calendars, cups, and other stuff with SO user content.
Users who want to show off their best answers or questions could paste in the URL and get a t-shirt or coffee mug with a nicely formatted version of their content. A calendar-a-day for top questions of a given tag would be a great gift.
Since the SO shop has closed, I'm wondering if there would be any interest in this kind of swag?
Of course there would be no use of trademarked logos.