Glo Worm is a stuffed toy for young children, designed by Hasbro's Playskool division, and made in Pawtucket, Rhode Island. Introduced in 1982, the plush, pajamaed worm body[1] contained a battery-powered device that when squeezed would light up the toy's vinyl head from within, creating a soft glow.
The original toy, upon release, was such a success[1][2][3] that Hasbro released a new Musical Glo Worm and Glo Bug in 1984, and a Glo Butterfly in 1985. A series of story books, night lights, videos and other merchandise was also produced until the early 1990s. However, in late 2005, the product was criticized for harming children;[4] its plastic head was softened with phthalates