The stock dinette table weighed a lot -- I think around 30 pounds. Very awkward to lift when making the bed at night! So I fabricated a lighter version, using half-inch Baltic Birch plywood. I finished it with three coats of a wipe-on polyurethane. We've been using it for over a year, and it has held up well. It's about half as heavy.
Here is what it looks like when set up for dining:
This is an overview (underview?) of the underside:
And this is a close-up of the socket -- I glued a circular pad of plywood under the table and then screwed the socket into the pad, so that the screws would not come through the tabletop: