Holiday Tree Ornament Mystery Eggs were found both in the Garden Shop and the Mystery Shop for the limited time of December 6th to December 27th, 2009. They were dispensed from a machine labeled Holiday Tree Ornaments. Each egg contains a random Christmas decor item which can only be placed onto the specially sold Chrismas / Holiday Trees. All of the ornaments are glow in the dark. There were originally 15 items in this Mystery Egg set when it was first released December 6th. A second set of 21 additional ornaments was added on December 13th.