Extended Work Top
If you like your portable workbench but sometimes need a larger work surface, here’s what to do. Screw a 2×4 to a 4 x4-ft. sheet of 1/2-in. plywood, then just clamp the 2×4 onto the workbench and you’re ready to go. And since the extra work surface is fairly slim, it stores easily.
How to Build a DIY Wood Workbench: Super Simple $50 Bench