I welded an angle iron frame and made it big enough to fit a row of 2x6's and gussets for oak legs (from an oak pallet from work)
I then covered it with on or two layers of 1/2 plywood. It needs more cross bracing, or a shelf underneath loaded with bullets or something, but no matter what you do, keep the colours light. The worst thing you can do is make the work area too dark to be in. Lighter colours make the space seem larger than it really is, and when you drop a small screw, makes it that much easier to find.
I then covered it with on or two layers of 1/2 plywood. It needs more cross bracing, or a shelf underneath loaded with bullets or something, but no matter what you do, keep the colours light. The worst thing you can do is make the work area too dark to be in. Lighter colours make the space seem larger than it really is, and when you drop a small screw, makes it that much easier to find.