Think outside the box... if it bends, you can knot it, knit it, crochet it, or filet it. I've knitted hemp, baling twine, nylon rope, sisal twine, garden twine, butcher's string, wire, fishing line, plastic grocery bags, and I ramble. :rollseyes:
The point is, you never know what you can do until you try it. The best guitar strap I ever made was with cotton packaging twine, and cotton dyes whatever color you want it to be. Go for it.