The most useful sculpture you can own is one that holds flowers.
Forty-three vessels across ceramic, terracotta and EcoMix: the Cima at 23 inches and its 18 and 19-inch EcoMix siblings, the Antique Green Cera at 23.5, the Flora at 16, the Polanco in unglazed terracotta, and the Volare, Escensia and Emalyn silhouettes.
Height is the decision that matters. Anything over 20 inches wants a console or a floor; 13 to 17 inches suits a dining table where people need to see across it.