Wistie

Wisties, also known as fire sprites or firefolk, were a small, radiant, sentient species native to the Forest Moon of Endor. Like the Ewoks, with whom they shared their homeworld, the fairy-like flying Wisties were fierce defenders of their forests, and the two species were allies. Ewoks sometimes used pouches full of Wisties as a weapon against intruders, such as Imperial stormtroopers. They threw the pouches in the direction of a target; on impact, the sprites emerged and attacked the invaders.

Text and facts from the “Wistie” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.