I followed this tutorial to make the marbleized ornaments. They were a little difficult, the nail polish kept chunking up too fast, or it was goopy on the ornament. I didn't use name brand nail polish like the tutorial tough, I used Wet & Wild.
I then filled the ornaments with fake snow.
The ornament below was really simple to make. (It's actually still not dry in the picture.) I took the top off of the ornament, and poured glitter and water-downed modge podge inside it. I shook it until it was completely covered.