Abstract: An apparatus includes a plurality of sides configured as a container with at least a front and a back and a cavity therein. A first side of the plurality of sides includes a first major surface and a second major surface, which opposes the first major surface. The second major surface includes a foot support. The first side further includes a forward edge, a back edge, a side that extends between the front and back edges, and a hole in side adjacent to the back edge. A second side of the plurality of sides has a slot extending in a direction between the front and the back. A pin extends through the slot and into the hole securing the first side to the container. The first side pivots with the pin in the slot and translates with the pin in the slot between the front and the back.