Here is a year 3 project comparing the force of gravity with that of a magnet.
First make a ghost out of a paper bag and attach a metal paperclip. Then, hold the paper bag just below the magnet. The ghost hovers!
Find out how to set it up a levitating paper clip in Revise for Cambridge Primary Checkpoint Science teachers guide page 68
See how a hands free ghost can be made in Hot Topics Myths and Legends page 31