Front side is placed below finished shapes; the top overlaps the 2nd box; the overlapped "covered" area is removed. All rectangles are now in place. Now, to finish the last one!

A small "shelf" is indicated by a smaller rectangle near the top front; a second rectangle establishes the depth; front to back bottom sides are connected. Now for the values......see below!

Many new combinations can be made from these simple containers: like making them transparent as well as opaque, textured or smooth, have objects in or falling over them, be different levels, stacked, indented, etc. Ideas are always open to change. For some additional rectangle ideas check out this page!