For the purposes of fun, i designed a toy. A small cup bearing the likeness of a hot-air balloon baseket is affixed to a helium-filled party balloon. Enjoyment is borne out of the process of establishing equilibrium, a hovering balloon. Drops of water or granuals of salt/sand work well as do bits of confetti. Available in a set of four, the multi-coloured baskets allow races and other forms of group play. Included with the set is a leaflet illustrating the scientific principles behind equilibrium and buoyancy with an old-time aesthetic. Ages three and up, probably.
