Rough and ready but solid! 48x24 top, 41+" working height.
The two little blocks sitting in the spotlight are my only scrap, and all that remains of twelve 2"x4"x8' studs. I have a half-sheet of 15/32" oriented strand board, and three-fourths of a sheet of 1/8" Masonite left. I found and added leveling feet for the bottom, necessary because the floor isn't level *or* flat. Underneath is my little air compressor and the case for my cordless tool set.
All the 2x4 lumber for the top and the legs is glued as well as screwed; everything else is just screwed together. The back board sits in a slot and is held with one screw at top center for easy removal.
All done with a circular saw, a cordless drill, and lots of coffee. <G>