One game I have enjoyed with my 5-year-old is to give two (or more) people an identical collection of 20–50 miscellaneous pieces (just pull pairs of identical p

One game I have enjoyed with my 5-year-old is to give two (or more) people an identical collection of 20–50 miscellaneous pieces (just pull pairs of identical pieces randomly and dump into 2 piles) and then each make something and compare. Or have one person make something and see if the other person can copy it, then switch.