IIRC there's an entire online community of treasure hunter-hiders. There was at least one guy I remember wrapping $100 bills around old nails, dipping in wax, a

IIRC there's an entire online community of treasure hunter-hiders. There was at least one guy I remember wrapping $100 bills around old nails, dipping in wax, and then (re?)inserting the nails into wooden fenceposts. Followed by clues posted online. Things like that. Not 100M, but man that's really raising the stakes. People would do things for $10K that would make your head spin.