Was considering the rawhide option. Saw some posts about it on other sites. Wonder if raw hide wrapped with sinew would work. Would be cool to make one from all primitive materials. I might experiment with that and see how it works. One guy tested some simple paper wrapped around several times bound tightly with linen thread and super glue. He said it's been shot about 20 times and was still holding. Well off to experiment, I'll post back here once I do some testing.