Abstract: A kit for assembly into an apparatus for throwing a whiffle ball comprising an elastic catapult for attachment to vertical posts and a calibrated speed strap for aligning the throw and estimating the speed of the ball. The catapult comprises a pouch with surgical tubing for propulsion and straps with hook and loop tape for affixing the catapult to the vertical posts.

Abstract: A container or other device or ornament with a centrally positioned opening in the bottom adapted to snap on to a button at the apogee of a cap and the combination of the container and cap. The container has a lid with a latch. The opening in the bottom is formed by two or more intersecting cuts, with a center portion at the intersection of the cuts removed to form a hole. This allows the tines formed by the intersecting cuts to deform to allow a button to be pushed through, thereby seating the box on the cap and when desired the container may be removed by the reverse procedure.

Abstract: A container with a centrally positioned opening in the bottom adapted to snap on to a button at the apogee of a cap and the combination of the container and cap. The container has a lid with a latch. The opening in the bottom is formed by two or more intersecting cuts, with a center portion at the intersection of the cuts removed to form a hole. This allows the tines formed by the intersecting cuts to deform to allow a button to be pushed through, thereby seating the box on the cap and when desired the container may be removed by the reverse procedure.