In the comments we will vote on a theme for this coming week for the competition. The comment with a theme that has the most upvotes by the end of the vote in ~48 hours will become the theme for the weekly challenge.
Try not to post any themes that have already been mentioned in the comments so that votes can focus on a single comment. The theme has to follow the rules of this community and sh.itjust.works in general, and cannot be a theme that has already been done.
My vote is for “Dieselpunk” https://en.wikipedia.org/wiki/Dieselpunk
Not heard of dieselpunk before but this is a great idea.