Tower, the makers of the eponymous Git client, have a history of providing design-oriented products in addition to their elegant app. You may recall the Developer Manifesto poster I ran a giveaway for last year. Their latest product line is a fantastic followup.
This is a companion discussion topic for the original entry at https://brettterpstra.com/2019/09/19/tower-presents-tech-animals-great-merch-great-charity