EastScape Wikibuilt from the game itself

A Falling-Star Firework

“Set it off: a star streaks across the sky for everyone on this map, with your name in the sparks. That's all it does. One show at a time on a map. From the Star Tent. Bound: it can't be traded, sold or dropped.”

Sold by

The Star Tent, in Cloudreach: 60 Star Fragments. World events.

Can't be traded. Your a falling-star firework can't change hands.