Acrylic Spice Tower Self-Stacking Spice Jar - Individuals by Prodyne. $1.99. The self-stacking interlocking spice bottle design keeps your spices sturdy, while you stack them high. The 5 oz. bottles are made of crystal clear acrylic and each measures 3" D x 3" H (6 stacked = 13 ¾" H). Patented design.