Such a cool idea!
Here's another one I read about recently - a parent was telling their child to put all their collected candies outside at the front door and leave it for the night. They told the child that someone will come and pick up some of the sweets to take them to the children who didn't get as many as they did. And that someone will also leave them a small present, to return their favor. So the next day, the child would find only a small amount of sweets and a little present, of which they were particularly excited.