Calculators; Cell phones; Computer keyboards; Computer mice; Connections, electric; Covers for smartphones; DVD players; Electronic animal confinement systems; Electronic devices for locating and tracking lost articles, people, pets using radio frequency, global positioning systems, cellular communication networks; Eye glasses; Facsimile machines; Global positioning system (GPS) apparatus; Hard disk drives (HDD); Laboratory cages for animals; Punched card machines for offices; Self-timers