Here is a video presentation of the concept (in French):
It’s an original way of offering, between friends or with family: You get a present, you don’t know yet from who. We tell you to who you have to offer yours. In the end, everyone gets a present
I invite you to give it a try for Christmas and New Year. If it’s used enough, we may develop some new functionalities. Tell us what you think of this experiment in the comments of this post.
You can read more about how I made it in this article of the labs section of my site.