As our final contribution on this Earth Day, we found this almost eerie set of Bird Shakers. No batteries or electronics are involved, you simply wind them up and send them across the table while conserving your own personal energy. The Round Salt and Pointed Pepper shakers are hand-crafted of metal and PVC and are each 3.5 x 2.75-inches. Pre-order one for $18.00 or $36.00 for the pair for a mid-May delivery date. Okay, now that you have finished reading this, go out and plant a tree!