Here's a great effect where an object vanishes and reappears somewhere else!
Three solid wooden blocks are shown to be on a wooden dowel. One at a time, each is removed from the dowel and placed in a top hat or other container for a few moments. They are then returned to the dowel and covered with a tube. Upon removal of the tube, which is shown to be empty, one block has now magically vanished! It is later found back in the top hat.