Preconsleeved by Gregory Wilson & David Gripenwaldt

A 2-phase voodoo trick where whatever you draw on one sleeve appears on the other. Completely examinable at the end.
Two coffee sleeves create a stunning sympathetic effect. Whatever you draw or doodle on one sleeve magically appears on the other. You then repeat the effect while a spectator holds the second sleeve. The method is crazy simple and the presentational possibilities are crazy fun.