I'm not happy with the blowguns here. The quality is fine, but what I find will probably warp when shipped to the dry US. I've
Pucuna1 thought about a kind  of humidor--a box with a glass lid with the blowgun inside and a means for keeping the inside humid.

Also parcel post in Peru limits the length to 1-1/2 meters. So I must ship by DHL or in volume by ocean freighter. I'll keep you informed what happens if and when these problems are solved.

Meanwhile, though, here is an article about when I had the good fortune to work with a blowgun craftsmwn from the Yagua Tribe.