I really like what I saw at Walyou (link), a steampunk engagement ring box. Let’s be frank, I’m getting too old to get down on one knee. I just want to give the woman the puzzle box and let her have at it. If she can’t figure it out, you don’t want her. If she doesn’t like steampunk enough to work through the various layers, you don’t want her. If her solution is a hammer, you don’t want her.
It seems to me to be a good test for a future wife — a steampunk wife.