Modular Work Bench and Shelves

I don't have much space to work, and I tend to be on the move, so I built a modular work bench and storage shelves that breaks down easily for transportation. The basic construction consists of 4, 2x2 "ladders" to which 1ft by 3ft wood shelves are attached to. It was inexpensive to build. 2x2's are cheap, light, and strong. The wood shelves are nice and solid, but I think they only cost about $2 a piece at Home Depot. It's modular in that I can add more ladders and sections to it, or I could assemble it as a smaller section. To move it, I just unscrew the shelves, and then it's easy to carry the shelves and ladders seperately. Drawer slides with extra shelves were added to create more workspace.