Cartesian Diver Only - 4 cm WL 1040, Ideal for Showing Archimedes Principle, with a hollow glass diver, shaped like a diver, with a 10in x 1 1/2in glass cylinder, a rubber sheet and rubber band, Fill the cylinder with water, drop in the diver it floats
Magnetic Earth Field Model, Use it as is or place it on an overhead projector to show the whole class, Iron filings are suspended in oil to allow the included magnet to align them to its field