One of my boyfriends is heathen, so I dual-color 3d printed him a set of Futhorc/Anglo-Saxon runes. Hopefully they're correct, very much not an expert lol... The Wikipedia page made me a little unsure on which symbols should or should not be included. These are made from PHA (polyhydroxyalkanoates), a new-ish thermoplastic that's naturally produced by a variety of bacteria, and breaks down harmlessly in any biome. Then, they were polished in a vibratory tumbler and anointed in black walnut oil infused with white pine, bog Labrador tea, yaupon, and sweetfern. I posted the files elsewhere if anybody wants to print their own!
Those look great! As a Heathen myself, I can say they look pretty spot on, but I don't really use the Anglo Saxon FUTHORC so I don't have much more input on those. Most of the stuff I've seen on using Runes for divination and such use the Elder FUTHARK, which is a similar but older set of runes. Many of them are the same, some of the runes are similar, and some aren't shared between the two.
I would prefer to use natural materials (tree branch, stones, etc.) for myself, but any material works just as well, if not better, when made with benevolent intent as a gift.