I rounded up my favorite ideas to do with a white Christmas trees on Pinterest! Unfortunately I couldn't track down the original sources of who made most of them so if you know...message me please!
Frosty the Snowman Christmas Tree - This is such an easy idea if you have a pre-lit white Christmas tree! Just throw on a hat, scarf, some twig arms, a face, and some felt buttons.
Grinch stuck in the Christmas Tree - Stuff green tights full of pillow stuffing and shove him in your tree.
Abominable Snowman Christmas Tree - All you need is some blue card stock or construction paper to cut out his feet and face. Stuff some kids size blue gloves for his hands ha!
Elf stuck in the Christmas tree - How clever! Put an elf hat on one side of the tree and some stuffed legs on the other. I would think you could use a bendy wire inside the striped tights to hold it in place.
Make a cute unicorn Christmas tree with just a few supplies! Find directions here.
Frozen Christmas Tree - Decorate your white tree with pinks and ice blue bulbs as well as some Ana and Elsa ornaments. Made by ANewDawnn
Rainbow White Christmas Tree - How fun to put the same colored bulbs near each other! Tree done by TheThingAboutDaisies