I made another shadow box! This time with the assortment of razor blades I found behind the bathroom wall upstairs, nestled amongst clouds of blown-in insulation. These date back to the 1920s-1940s and were presumably dropped into the wall through a long-gone medicine cabinet. It just goes to show well-curated trash can become treasure! I will eventually hang this in our bathroom on the same wall where the medicine cabinet would have originally been.