Remember Glo Worms and Glo Friends? These were rubber,
plastic, or plush toys in the shape of worms, that would light
up at night. And of course there were books, key
chains, and other relative novelty items as well. As far
as we know, these things are still being marketed today.
In the 80's, Playskool and Hasbro made Glo Worms. Glo
Worms were mostly plush, Glo Friends were rubber. There
was a Glo Friends cartoon as well (see video below).