Whilst playing around on Facebook, it suggested I check out a company that makes products out of Mil-Spec 550 cord (1/8" diameter nylon "rope" capable of holding 550 lbs). I saw that and said to myself, "self, you can do that!"
Good ol' 597.
With the new 550 cord sling
550 Cord Sling
Close-up detail
The next project will be a belt, I think.