Hi. Your group has a good focus. One thing, "humane leatherwork or taxidermy" is a good idea, but I think it hardly exists. Sale of animal's skins is part of the profits of animal industries. Sometimes you can find dead animals, but usually not in a state suitable for taxidermy. Feathers can be found though.
Some people like to say, 'Well, eating animals and using their body parts is all part of the circle of life", but how many of those people would want to become some animal's dinner, or have their head stuffed and displayed on a wall? If it were humans 'beneath the wheel' we wouldn't support it.