

Surplus aluminum canteens
Hi, does anyone else use old surplus water bottles or canteens? I picked up two old ones for myself (a Swedish M31 and a Soviet VDV canteen). both are made of aluminum
I use a Swedish stainless steel mess kit because I prefer not to cook in aluminum.
I really love the vintage look and design of these bottles.
I was wondering if it might be possible to apply some kind of coating to them—perhaps anodizing? Has anyone tried that?
What suggestions or good advice would you give, considering I plan to keep and use these? For instance, how could I coat the insides? Of course, the safest option would be to just throw them away, but I’m just foolish enough to be in love with vintage items.
I don't go hiking very often—maybe 3–4 times a year on trips lasting about 2–3 days.