Lego puzzles – just throw away the instructions and think
This would help kids (and adult engineers) use their brains to solve problems with the existing materials. Sure use the instructions first time, but next time you build, do it with YOUR brain.
First round with each build I let my boy use the instructions as its a good way to learn – then he looks forward to the second build, without instructions as its a new challenge, better is that he gets to explore and “make it even better than lego does” usually with bigger guns or boosters 😉
I’ve done this myself before – they should have competitions for new builds where the winner gets it closest the fastest. I would watch that all day if it was on LEGO’s YouTube.