Thinking about this brought back some memories of some 45+ years ago. Several of us flew good old Voodoo's as teenagers. My friend was given an old military camouflaged nylon parachute. Another guy purchased an orange/white nylon parachute from a military surplus store. I think he paid $5 for it. I can’t remember how many combat wings we covered with that stuff. The biggest downside was the weight, it was pretty heavy. The upside was that it was free and extremely strong, making the plane almost impenetrable. It really made for some pretty cool looking camouflaged planes!