Add Fireflies Anyway (or Sparkle) (+ Item and Block)

Though fireflies may not be frog food, they make the best ambience! I would also like to suggest that instead of individual fireflies, you could add a mob called a Firefly Sparkle, named for the IRL group of fireflies. This mob is itself invisible and has no collision with other entities. It wanders around emitting firefly particles, how many depending on the Sparkle’s health. Use a glass bottle on a Sparkle to collect it in a Firefly Bottle. Use the bottle on the ground in order to place the Sparkle. Also, craft the Firefly Bottle into a Firefly Lantern to use as a light block! Please Mojang, add fireflies (or the Sparkle, Bottle, and Lantern)!