Maxperson
Morkus from Orkus
It specifically says planting an object on someone else. You need to hide the object when you're planting it, otherwise the other person would immediately notice the new object and your hand in their pocket. And once again, the example is obviously not intended to be limited to just people.
That's not true. You do not need to hide it. They simply have to be unaware of it. There's a difference.
If you open a drawer and throw a quarter inside, it is not hidden even when the drawer is closed and the quarter is out of sight. However, if you open the drawer and lift up some things to hide the quarter beneath them, THEN it's hidden in the drawer. The same goes for planting an object. It's not hidden. They just aren't aware of it.
And you are wrong, it is intended to be just people, which is why it specifies people. If it were meant for other uses, they would have said so. You can use it for other things, but that's a house rule.