search tinker-cad - magnetic-puzzle-add-ball-bearing-1-disk-mags

1 nut & bolt
1 disk magnet
1 steel ball bearing
glue

move the ball off the magnet by taping in right direction
inertia momentum will move the ball to the cut out that lowers it to slide lid open

remix puzzle to have no storage and just the movement section

use the idea in different puzzles or make it bi bidirectional so u need two taps to get the ball somewhere els

ask if u like some cad work
English or dutch