What happens when a baby squeezes a "Gloworm" doll?

When a baby squeezes a Gloworm doll, it lights up and plays a lullaby. The toy combines a soft plush body with a battery-powered mechanism that illuminates its translucent face and produces soothing sounds.

Hasbro’s Playskool Glo Worm was introduced in 1982 as a comforting bedtime toy. Its simple squeeze activation was designed for young children, who could turn on the gentle glow without needing to operate a conventional switch. The light made the toy function as a small night-light as well as a stuffed companion.

Different Gloworm editions have varied slightly. The original versions primarily emphasized the glowing face, while later Musical Glo Worm and Lullaby Gloworm models added songs, multiple play modes, or longer sound sequences. That is why descriptions of the toy sometimes mention only the light and sometimes mention both light and music.

The name is also commonly written “Glo Worm,” the branding used by Playskool. Despite the spelling, it is the same familiar plush toy often called a Gloworm in ordinary speech.