I like the suggestion of the canoe dry box. I have one of those too, that I use for wallet, phone, and keys when canoeing.
But for pipes and tobacco when camping (or any overnight trip), I use a similarly sized/shaped pistol case. The really cheap, molded plastic kind with foam lining. The "egg carton" foam hugs my pipes in place just like it would a pistol.
I throw in a couple of pipes, a couple baggies of tobacco, a lighter, a few pipe cleaners.
For a day trip I use a leather pouch, but for camping I do fear an iron pan (or a kid) snapping a shank, and I use the hard case.
Sure, it's one more thing ... but after loading up a 12 person tent, a mosquito netted eating pavilion, piles of sleeping bags and pillows, coolers of food, and boxes of other supplies, not to mention 7 kids ... what's one more thing?