Drop Spots

"A dropspot is a kind of alternative mailbox. It’s a hiding place in a public space, where people can leave things for exchange. Anything. It’s a wierd and wonderful way to add personal character to the streets that we live in. Stash something fun and see what you get back."

I think I would be a bit scared of what to find in a "drop spot".
Imagine you have to put your hand through a hole and someone as put a pile of sh** in there?

I do like the idea though, sweet.