Foamcor is an amazingly durable material. I have things I've made from it that are 20-years old and still intact. It will warp or get a slight curve to it after time. I guess one side of the paper shrinks more than the other side. But, for an item as small as this it should be fine. I'm going to make one in a few weeks and will come back with some photos. I think it would survive a shop environment as well. It might get dirty and you can't clean it with any liquids. You could make it out of gatorfoam. It's foamcor but the skin is a polymer instead of paper. That can be cleaned and it never warps. Both can be painted so you could paint it a color to match your printer before you put it all together.