Earthwise Packaging's CoolJarz line includes Lockz, a lockable jar that runs in side from 13 drams (about 1 1/4 inches wide by about 2 3/4 inches tall) to 136 drams (about 4 1/4 inches wide by about 3 inches tall). The jars are lockable and include a "privacy sleeve" that can be used to hide their contents. (Courtesy photo)