There are some clever ways to place an object at some 'secret' location and allow the recipient to find it. *HOWEVER* that hardly solves the surveillance problem.
If you are in the city, everything is on CCTV. But you are not going to drop something valuable in the middle of the city.
I look out from my window, and I see forest, ocean, and swamps. Drop in the forest. Drop it in the swamp. *Bury* it in the swamp and take a photo of the location, like a pirate map to buried treasure.
The swamp near me gets flooded by the ocean at high tide for several miles. Bury it before a high tide, and the tide will erase the marks of the digging. That is how we deal around here with child protective services and people who go pig hunting on private land without permission.
