This recipe requires a sleeve of Petri Dishes, but Food.com won't let me include that in the Ingredients, since they are not food. Petri Dishes can be purchased from Amazon in packs of 20 for --$10, if you can't find them locally. Originally seen in Parents Magazine, Oct 2011, Pg. 148-9 under the name "Germy Jigglers". Those were without the vodka, of course!