Tell HN what you do that's cool!
A few examples: Fulgurite, Manhattan project glass, Japanese Pesos, Nazi-Occupied Polish stamps, 1996 Olympic medal, bone records, DEA task force patches.
Also plenty of fossils, meteorites, international currency, memorabilia, etc. Inspired by a childhood spent exploring museums and, in recent years, Mini Museum on Kickstarter.
Edit: (Also many other less cool hobbies with tech & art)