For $30.00 or less, one can buy a hollow core door at the big box stores. I clamped a 36 x 80 inch door onto the top of my table saw. Now, I have a great, wide and lightweight (easily removable) work-table. I can leave it up all of the time, but if one could not do that, it would fit nicely behind a door and be available only when needed. Rich

p.s. I saw a sale on the doors over the weekend for under $20.00 . Scratch and dented doors might even be cheaper.