You have to report over $10k in cash, so either you’re taking a ton of vacations or risking it getting confiscated and then trying to explain it.Clearly marked bags - turn it in
Found near my house - turn it in
Indescriptive bag in some remote area - transfer it to a different bag, verify that there are no tracking devices, hang onto it for awhile and check news feeds to see if it's reported.
Also, I think some of you underestimate how easy it would be to spend $1 million in cash without being noticed. You could go another country on vacation and have a pretty fun time as long as you don't buy stuff that you return home with. Things like excursions, drinks, tickets to events, etc are all pretty untraceable.