Since that original thread, I have begun mounting my fixed blade knives in wall mounted oak frames approximately 20" x 20". I chose printed fabric backgrounds (blue field with white stars, red bandanna print, unbleached muslin), applied double sided carpet tape to hold the cloth in, then mounted the knives using some clear elastic thread which is hardly noticable. I suppose you could use fishing line since it would look about the same, but it wouldn't let you take the knives down for playtime!
I only have three of the five frames finished so far, so only 40 or so knives are on the wall now. The frames are glass covered, and five feet up, so they are safe from my grandkids. I do not have a digital camera, so I cannot post pics of them yet.
The folders wait in a small 15" x 20" five shelf oak curio cabinet with glass doors. Hopefully the supplier of the larger frames will still have some when I can afford another five. I am quite pleased with them.
Codger