Well, it has, in other places. My kid had a basketball net playset that used a hollow base you would fill with water. https://www.littletikes.com/item/612329/

Well, it has, in other places. My kid had a basketball net playset that used a hollow base you would fill with water. https://www.littletikes.com/item/612329/totsports-easy-score-basketball-set/1.html https://www.littletikes.com/item/612329/totsports-easy-score... Now they recommend sand which probably would be less inclined to grow mold and bacteria in a warm enclosed environment. My bigger question is: why do U.K. front loaders need a large counter vibration mass? My 10 year-old LG direct drive unit has no weights at all.