Wedding rings
A diamond ring returns thirteen years after it was flushed away
A ring accidentally flushed years earlier was recovered intact and returned to its owners.

The ring was flushed by accident — the kind of small, fast moment that you replay for years.
Thirteen years later, a renovation crew working downstream of the original bathroom found the ring lodged in a fitting. The inscription matched the family's description.
Most things that disappear don't actually leave. They just stop being where you can see them.