Ha, ha! I think the material has potential. Here's the thought process:
I sliced the sponge tube into very thin slices, and considered threading it with twine. Instead, I used bamboo - essentially creating skewers...
A while ago, i tried to figure out how to use things laying around, like chopsticks and packing peanuts, to make the elements of an enclosure. I used the chopsticks (or similar sticks) and skewered the packing peanuts, kind of looks like the popcorn you'd string around your Christmas tree...
To make it more colorful (and because i like the more porous material) I replaced the peanuts with the spongy tubing:
I jammed the skewers into a standing tube, but didn't like the results...
So, instead, I cut the tube into rings, and skewered those. Then, as a departure point, tossed on a nymph, spot a pic, and moved on...
Here's the same nymph about 5 minutes later, all settled in...
You can see where this is moving in the direction of a built-in safety net. If a larger nymph molted in the above picture, he could reach behind or to either side to get a grip for the "flip". This same design, done with, say, rags wrapped around sticks, would produce the same result. Soft, non-claw-breaking surfaces with good grip.
Finally, I did a small sample of the same idea, but with the sponges from the "classic" SpongeWorld.
Thoughts...?