Thanks mate for your suggestions. Funny that it would be a touchy subject... most people in the world eat animals, but I guess many in the West wouldn't want to think about where that flesh comes from. I myself eat only a little meat, and then, I try to eat fairly sustainably... such as kangaroo. I'm all for using roadkill and other found dead animals in decoration... more ethical than using gemstones or silver or anything made in a factory that jewellers tend to use (even if it's vegan, lol). I tend to use seeds and shells and found fibres and stuff like that, and scavenged and recycled metals that otherwise would be sent to landfill or overseas to be smelted.
Interesting idea about taxidermy. I wonder if anyone in my home town does that? Problem is though that it's usually a male domain, and it's notoriously hard for a woman to access any knowledge in those domains unless she exchanges sex or the allure of, and I am neither single or het. My friend who belongs to a bowhunting club has that problem. I suppose I could ask her to ask others about bones from the pigs and deer they hunt, but that's a long shot given that she doesn't have any favours owed by them. However, when I finally get a car, I'll find much more roadkill I'm sure.
I'm not particulary looking for a barbaric ethnic-appropriation approach, just a sustainable one that reflects the uneasy urbanisation in the middle of the vast tropical wilderness I live in.
Bone will disintegrate like any other organic product... but polished up and kept moisture-free it will last for a very long time, much longer than wood