I’ve added some earthquake protection of my storage shelves. The idea is to prevent the contents from jiggling themselves off the edge during a quake, land subsidence or a Pittsburgh Steelers game. The design of each shelf is customized for the particular shelf. The example shown here consists of nylon cord held tight with a section of bungee cord, which allows easy access. Top shelves have a wooden lip glued or tacked into place. Some shelves are built with a tilt so everything naturally slides to the back.