Prevent your board game boxes from opening when standing in vertical position.
3 exemples :
They are loose enough to not scratch the boxes, but maintain them closed.
Printed in transparency PLA, 4 per box (but 2 could maybe be enough).
Fusion360 file included to make your own (adjust the SmallSide & LongSide variables, see the screenshot)
The author marked this model as their own original creation.