This article is about the 1980s toy series. See Glowworm

Glowworm

Glowworm, or glow worm, is the common name for various groups of insect larvae and adult larviform females that glow through bioluminescence. They may sometimes resemble worms, but all are insects .-Classification:Major families are:* Lampyridae , found around the world...

 for the insect larvae.

Glo Worm was a stuffed toy for young children, designed by Hasbro

Hasbro

Hasbro is a multinational toy and boardgame company from the United States of America. It is one of the largest toy makers in the world. The corporate headquarters is located in Pawtucket, Rhode Island, United States...

's Playskool

Playskool

Playskool is an American company that produces educational toys and games for children. It is a subsidiary of Hasbro, Inc., and is headquartered in Pawtucket, Rhode Island.-History:...

 division, and made in Pawtucket

Pawtucket, Rhode Island

Pawtucket is a city in Providence County, Rhode Island, United States. The population was 71,148 at the 2010 census. It is the fourth largest city in the state.-History:...

, Rhode Island

Rhode Island

The state of Rhode Island and Providence Plantations, more commonly referred to as Rhode Island , is a state in the New England region of the United States. It is the smallest U.S. state by area...

. Introduced in 1982, the plush, pajamaed worm body contained a battery-powered device that, when squeezed, would light up the toy's vinyl bottom from within, creating a soft glow while playing a soothing lullaby.

The original toy was such a success and Hasbro released a series of story books, night lights, videos and other merchandise that continued until the early 1990s.

In late 2005 the product was criticized for harming children; its plastic head was softened with phthalates, which can be dangerous if swallowed by children.
In 1986, Playskool released a number of "Glo"-based toys that glowed but were made of soft vinyl.