I created some ornaments using clear glass ornaments purchased from Michaels. First I used a technique from a YouTube video by Ranger. They sprayed alcohol inks into the ornaments and then shot some canned air to move the ink around inside the ornament. I left them to dry and they looked cool, but I really wanted to do the insides with glitter. After drying a couple of days (which isn't necessary because alcohol inks dry almost instantly) I added another technique. I poured some Mop n Glo into the ornament and made sure the entire inside was covered. I quickly poured out the excess. A very tiny amount of the colored ink was reliquified, but not enough to make a difference.
After about a minute or two, I poured in some white glitter and shook it around covering the opening with a paper towel. These are some of the ornaments drying.