Magnetic sand?
... Of course, its iron filings that fill the hourglass. Due to the magnets in the wooden base, they collect on the floor within about 20 seconds to different structures.
Material: wood, synthetic material, iron shavings
Measurements: 6.5 x 6.5 x 10.5 cm
Age restriction: 3 years
WARNING! Not suitable for children under 36 months due to small parts, choking hazard!
