I have to get a picture of one my girls have but its easy and super cute. They made them at girlscouts the other day....
all you need
babyfood jar (or any jar with a lid you like)
clay (or something that can be used to hold your decoration to the lid)
decoration (they used little christmas bears ceramic i thing)
just stick the decoration on the inside of the lid with the clay, add water, glitter and glyserin. place lid on and shake. very simple and cute