Christmas Tree Trim Swap Ring

Bored with your mundane yearly tree decorations? Don't want to store more? Jealous of the family down the street who always has the perfect tree? Swap them with your neighbors to the left. Where you have ornaments that have some meaningful history, tell them the story of it in a Christmassy letter, card, 2D barcode to a video link, etc.

A new set of decorations every year. See how many remain and how they change by the time you rotate through the whole neighborhood. Don't like your neighbor? Get the tackiest tree junk you can find. Hold contests to see who can get the ugliest decoration theme.