I did pick one up at Cabela's in Phoenix, Arizona. But it's a heavy one and if we're doing a long trip with a lot of portaging, we'll probably leave it behind.
I imagined a piece of fabric that would be suspended between two trees. Somewhat like some of the existing wooden tables built at some campsites.
I saw the fabric as being stretched in a way that would make it stable and have a pocket flap along one edge. The other edge could have a ribbon of hooks to hang things too. It would be lightweight, easy to pack.
Without further ado, here is the alpha prototype version. It didn't work quite as expected. I decided to stabilize the length of the table with my walking poles. I created a casing area to hold the poles, obviously this would only be one usage of the poles, not a permanent solution. I also haven't added the ribbon with hooks on the other side.
Basically the whole table is just a rectangular piece of fabric doubled up and folded in a way to get the pockets. I created two casings to hold my trekking poles, extended to the 125 cm length. I also ran a string of paracord through each of the 2 casings and tied loops on the ends. Then I took two bungee cords to suspend the table between two trees.
Here's a view from the other side without the pocket.
It also needs some way to prop it open as it tends to fold on itself, much like a hammock. In the photos above, taken in a local park, I found small sticks on the ground that I broke into the right length and stuffed at either end. Maybe we could whittle a couple of twigs into the role on the trip. Hmmmm.
I'll have to brainstorm a little more with LT. He hasn't seen it yet.