This tornado in a jar would be a great visual for a science lesson. It is easy to make and interactive. The students can shake the jar in a circle to get the tornado formation and see its shape and how it moves. Adding "Elijah" to the jar?
A Gust of Wind by Pauls Cocksedge, an installation of 300 sheets of corian engraved with the words "Idea Tray" and a series number and suspended like sheets of falling paper at the Victoria & Albert Museum for the London Design Festival