To make your snow globe, you’ll need to measure the right amount of glycerin. A good ratio is one cup of glycerin for every three teaspoons of water. This gives you enough room for all the ingredients and leaves plenty of room for shaking without spilling too much water.
To get the globe looking like a snow globe, add a few drops of blue food coloring to your mixture before filling up your tumbler with glitter until it’s full but not overflowing. If you want to get fancy, use silver glitter instead!