Well, what can you invent today? What can you use around you? What can you inspire others with to create themselves anything they desire (creativity is contagious and exponential).
We listed many things before, including use of pool noodles, popups, tents, and more. And, today showed at NoodlePonics that foam balls and ladies curlers can be used to hold plants in the fog chamber walls as well as start seeds!
http://noodleponics.blogspot.com/
1. manufactured legs and feet for free standing ideas
2. the folding polycarbonate corrugated plastic display stand (hard to find, so make your own with sheet and coroclaw cutting device)
3. the folding telescoping camera crane, to hold any light or problem, very cheap these days
4. prefab a frames, like the sign or sawhorse, folding and movable for the chamber
5. any idea to hold plants that have no pot, or hold them firmly in the net pot that is not expensive such as burlap shown at:
http://noodleponics.blogspot.com/
6. any prefab item that uses the polycarbonate sheets
and, more miraculous sawhorse ideas: