Nia and Zelph,
I really like your idea for a titanium-tent-stake stand, Nia. I've been thinking about that, too. I was actually thinking about exactly what you proposed but inside a shroud made of the same fabric, foil (titanium or aluminum), or Kapton film (good up to about 900F), so it could still take advantage of preheated secondary air (a double wall design). Then it would still be collapsible.
The fabric is actually not fiberglass. I tried the two major varieties of fiberglass (E glass and S glass) in earlier designs, but the E glass melted and the S glass became brittle and disintegrated after several trials. It's alumina (aluminum oxide) ceramic. The piece I used is a scrap left over from a research project. There are a lot of companies that make it, but it isn't easy to find in light weights or small batches. Heavier weights (8oz-30oz/yard) are sometimes used at foundries or for welding blankets. Cheaper silica (silicon dioxide, or quartz) fabric would probably work, too (the thread I used is silica).
The fabric I used is very tightly woven and just looks and feels like lightweight canvas. It isn't dusty or brittle, and I don't think it's porous enough to allow much gas exchange through it.
A collapsible wood stove would be great. You guys all have excellent ideas.