One of my favorites is this old TOMY Christmas Venusaur. In the 4-Frame Gag Theatre comics, Venusaur is shown in a lot of gags where it grows different types of plants including a Christmas Tree:
I couldn’t find it myself but heard from someone on instagram that pokemon center japan currently offers downloadable coloring pages that can be folded as ornaments, thought about this thread when i heard
Good to be back around! Took a small sabbatical due to work mainly but I’m still collecting heading to the Singapore Pokemon Center today so if I find anything good for Christmas I’ll post it!