My boys just made their own at Grandma's over Thanksgiving break. She had some of the round "holiday" Coke bottles that you can get at Wal-mart right now for a $1 a piece and just peeled the labels off. She filled them 3/4 Karo syrup and 1/4 water after the boys added all kinds of glitter and holiday metallic confetti stuff. (well half mixture first, then the stuff, then topped off the bottle with the mixture.) She just eyeballed the mixture amounts and they had to shake it really well to mix up the syrup and water both times. Then she sealed the cap with red electrical tape. They had a lot of fun doing it, and had their very own snow globe afterwards. They are a little heavy, but have been very sturdy - after many droppings on tile floor.