First off, that's a great gift! Funny yet super wholesome.
Secondly, holy crap you have a lot of cousins!
I had the complete opposite experience. Played the Balatro demo during one of the Steam fests and was instantly hooked. Played it for like double-digit hours in one weekend and pretty much knew I’d be getting the full game when it came out.
I had fun with the Dungeon Clawer demo too, but I agree with the person above that it felt a bit slow. I wonder if there’s been some updates to it since I last played it a couple months back.
while you can get a step counter on your phone (including privacy apps like Pedometer on F-droid), I’d go for a dedicated clip on simple counter. There is something about a physical object dedicated to the task that makes a difference to me sticking to it.
Honestly this advice is just as good as the first tip!