Tetra erasers --

These TETRA erasers spotted at the recent Good Design Expo in Tokyo are the perfect editing tool for pencil-pushing tetrapod enthusiasts. Produced by Sun-Star Stationery Co., Ltd., the shapely erasers come in 9 colors and are available at stores like Tokyu Hands for 120 yen (about $1) a pop. Pile them on your desk to inspire daydreams of the beach in Japan.

Tetra erasers --