Wonder Glass

This is a great magic effect that has been around for a very long time and still evokes the same incredible response as it always did.  You show a glass of milk and a piece of paper. You roll up the paper into a cone and proceed to empty the glass of milk into the cone. You can see the milk emptying from the glass, but when the paper cone is opened the milk is seen to have disappeared. You can even use a borrowed paper to make the cone. A lot more comedy routines are possible with this Wonder Glass.