The Maze Of Cardboard With Their Hands

5. To make a «trap» circle coin pencil and using stationery knife, cut a circle into which fit ball, bead or pellet. Cut the trap so that the bead or a ball could pass them.

If you want the bead does not fall on the floor, bend your (and, if necessary, trim) skirting the box and insert it into another box (see. Picture).