The 'Magnet in Mid-Air' project needs bismuth, and here it is. About two tablespoons of bismuth shot (the size of the BB's used in BB guns). This should easily be enough for the project, with some allowance for spillage and accidents. With care, you could get two projects out of this amount.
This makes a good sample for Bismuth
in your collection of samples for the Periodic Table
of the Elements.