Really great effect the "flowing sand"! The children (about 2 years) are always very enthusiastic (without an adult demands enthusiasm ...) when the sand slowly trickles through your fingers. And it can be downright perfect shapes with sand molds produced. As for the spilling on the sand on the floor, it is actually quite simple: We sweep briefly around the table (bottom = laminate), will be played at the with the sand. Then we can relax and after playing the sandy sweep up and fill back into the Tupperware container. The sand also does not dry out and really takes reluctantly other dirt on ...
Tip: We have bought the award-effective 5kg variant and from time to time presented smaller portions to friend. Brings joy and is really very efficient!