How about one of the puzzle boxes?
https://www.amazon.com/dp/B07X1L7DS9?ref=ppx_yo2ov_dt_b_fed_asin_title
I have bought multiple of these (different kinds) as gifts for DH, DSs, and even FIL, though I am afraid I didn’t put any money in them 
You would need to first take it apart and then put it all together, but there are supposedly instructions online if needed. Also not all of them have much space inside, so a bit of research would be needed.