Abstract: An earth retaining wall and method having at least a pair of tiers of side-by-side blocks which define a receiving channel for a connector bar with spaced-apart keys that engage apertures in a lattice-like grid extending laterally from the tiers, the grid being covered by backfill for interlocking the backfill with the retaining wall, the keys distributing the load of the backfill evenly across the wall.

Abstract: A toothbrush has a removable brush unit, and a handle; and, a plurality of brush units is packaged within a box that also includes dental floss. The box has lips to retain the handle in place on the container, and the bases of the brush units effectively close the compartments to maintain the cleanliness of brush units. The toothbrush handle has a recess to receive a base on the brush unit so that handle can be manipulated to pick up a brush unit from the box. Two or more boxes can be stacked to provide a larger supply of brush units.