For this project, you'll need: glitter (we used Martha Stewart's glitter which is superfine and was super on sale at the time), a hot glue gun, Mod Podge, milk caps, and string.
Here's the simple how-to. Cut a small amount of string to hang the ornament with and hot glue to the inner edge of one of the milk caps. Take another milk cap and hot glue the two together around the inner rim. Next, brush on glue quite liberally. Then, pour the glitter all over where you just spread glue. (Note: only glue/glitter one side at a time or you'll end up smearing the glitter. So try to be patient and wait for the back side to try before attempting.)
And this is what you'll get!
Easy, sparkly, and inexpensive (free if you have glitter on hand!) They sure beat those standard glass balls.