A Pyrolitic Graphite levitation kit containing 9 pieces of  pyrolytic graphite of different shapes, sizes and thicknesses, plus 16 each 1/4" cube neodymium Grade N50 magnets in a north/south checkerboard configuration. The kit is mounted and stored in a clear 2-level acrylic storage box with a snap on lid. Any shapes, not currently in use, store in the lower level container under the magnets, so they don't get scattered and lost. Each of these magnets may be marked with a light red slash across the north pole for orientation purposes which rubs off fairly easily.. 

Levitating Pyrolytic Graphite  is fairly sensitive to the magnets being level. If not, the graphite piece tends to slide smoothly off to one side. 

See how various shapes and sizes line up with the magnetic grid and how different thicknesses affect floating height. Or buy more magnets and have a whole herd of graphite floaty sets (or one big busy one). 

Shipping is free to the USA via first class mail.