This was modeled after the Stanford d.School's bleacher box. It's one inch shorter, and 3 inches less in width and depth to get it to fit on one 4x8' sheet of 3/4" plywood (17"x27"x27"). Another change is I only put ovals on three of the four sides so that the box can be set set on its side and sat on comfortably. Finger joints all around. If using a CNC router to cut it out, set over cutting to true to allow finger joints to fully join. 1/4" holes are also drilled in the top and bottom. This allows for adding indexing objects to allow the boxes to stack and index into place like a Lego brick.