Just made this last weekend. It's a combination plyo box and short workout bench (15" high). Has angled sides and non-stick rubber on bottom to keep it from slipping. Total cost: $4. Used scrap metal in the garage, some scrap butcher block left over from my workbench build, and a can of red paint I had lying around. Only thing I had to buy was the bolts/nuts/washers to attach the top (bolted onto gussets on the bottom). Finished the top with a couple coats of tongue oil.