Saltwater, gallium, iron filings, tiny ball bearings, and other solutions could be used. The latter two might be fun in conjunction with magnets - a shaped magn

Saltwater, gallium, iron filings, tiny ball bearings, and other solutions could be used. The latter two might be fun in conjunction with magnets - a shaped magnet on the back of the pendant would create patterns in the lights, or electromagnets could hold the conducting particles in place. This would be a fun fidget toy, for sure.