I just built a 12ft workbench for my 3d printers and other small project stuff out of 1/2" ply, 2x4 studs, and wood screws. It's super overkill for what I need but those parts were what was cheap. And I'm pretty sure it could hold my riding mower if I could get it up onto there. And that's without taking advantage of butting boards against gravity rather than letting the screws do all the lifting. Unless you need to work on a car on your bench, screws are more than enough.