dk,

I think making one would be the best way to go. You could use very light (but sufficiently strong) fabrics or netting, webbing and buckles and some Dyneema or Spectra for the bottom piece to prevent punctures.

Many is the time I'd have wanted to use one of these chairs after a long day on the trail. And they are great for just sitting and reading of B.S.-ing around the campfire.

As for the stiffeners I recommend carbon fiber if you can find it. After all, we're trying to get weight to the absolute minimum.

So PLEASE someone, make one and sell us the plans & list of materials suppliers.

Eric