What makes a fun noise when you shake it? Find trinkets, natural materials and sensory objects to collect in the beautiful, stackable Treasure Tubes. The round, transparent acrylic tubes with removable covers hold small objects to observe, display or rattle. Largest Tube Dia: 7.5cm x H14.5cm. Smallest Tube. Dia: 7.5cm x H9cm. Rec3+. 8PK.