"PRACTITIONER ACTIVATOR by Lemniscate Music. The Practitioner Activator is designed to fit comfortably around the leg. It comes with quality elastic strapping that won't loosen or slip, a buckle that closes and releases easily, and a rubber surface for "activating" tuning forks that is formed to fit comfortably on the leg. An indispensable tool for therapists working around tables and in locations where it is inconvenient to carry a table top activator."