Often in fiction, fairy creatures, fireflies or other magical insects get depicted as simple little points of light rather than going for a full design for something so tiny we'll never get a good look at it.
The obvious inspiration is fireflies. It's funny how fireflies often end up behaving in unusual and rather magical ways. In a way, it's an example of the connection between light and magic.
Do not confuse with By the Lights of Their Eyes; this trope is about Energy Beings or Faceless Masses that may or may not sparkle. See also Will-o'-the-Wisp (point of light that leads unwary travelers into danger) and Hitodama Light (floating flame that represent ghosts).
- This trope actually becomes motive for murder in Furuhata Ninzaburou a very eccentric editor decides to change the lime-green points of light to red points of light for the hell of it. The original artist flipped out and bashed the editor's head in. (Art is Serious Business.)
- Atlantis: The Lost Empire: The "pyreflies" are depicted this way, more or less. They're visibly insects up close, but for the most part they're depicted as flying points of light.
- Pinocchio: The Blue Fairy first appears as a bright light that looks like a star before taking the form of a beautiful woman. She departs in the same way.
- The Princess and the Frog: The scenes with Ray's family have both detailed fireflies in the foreground and points of light in the background. Because the stars look like fireflies that are just further away, one of the fireflies has tragically (and ironically) fallen in love with a star.
- It's a Wonderful Life: The ghosts/angels in the opening are seen as celestial bodies that flicker when they speak.
- A Midsummer Night's Dream: In the 1999 film version, the fairy characters have this form at the beginning of the movie, when they arrive, and at the end, when they leave.
- Bit from TRON is the personification of an on-off bit. It's basically a Disney sidekick fairy in Cyberspace.
- The Dresden Files: Harry summons a tiny glowing pixie named Elidee to serve as a guide in Summer Knight. She has a body, but you have to look very closely.
- The Stormlight Archive: Some of the smaller spren are described as this, such as lifespren (small green sparks) and rotspren (tiny red points of light).
- In the Buffy the Vampire Slayer episode "Fear, Itself", Willow summons a fairy like this to guide her out of the haunted house. However, the spell is warped by the demon haunting the place and her own lack of focus, leading to her being chased around by a swarm of little floating lights.
- Doctor Who:
- The Megara from "The Stones of Blood".
- The nanogenes in "The Empty Child"/"The Doctor Dances" are floating pinpricks of light, much larger than "nanogenes" would imply.
- "In the Forest of the Night": The entities controlling the trees look like this when the Doctor temporarily increases the local gravity to make them visible.
- Merlin (2008) has the Sidhe depicted as blue points of light, but due to Merlin's magic powers, we get some lovely FX shots of them in all their scary magical glory.
- Tinkerbell in Peter Pan (1904) and adaptations is commonly depicted as a glowing ball of light (dragonfly wings optional), based on the original medium using a small light reflected from a mirror and a tinkling bell.
- All the Animal Crossing games have fireflies shown as points of light, until you catch one of them.
- Child of Light has Igniculus, a newborn firefly with the appearance of a glowing blue raindrop. He is later revealed to be an elemental, and there are others like him.
- Most The Legend of Zelda games from Ocarina of Time onward depict fairies as a ball of glowing light with butterfly wings. Additionally in Ocarina of Time, the air of the Kokiri forest is full of small, flying dots of light.
- Nox: A magical spell summons a small swarm of fairies that circle Jack until an enemy approaches, at which point they go kamikaze on the enemy. The fairies never appear as anything more than yellow sparks.
- Quest for Glory: The fairies in the first game are little balls of light of various colors. The ones in the fourth game, however, are far more detailed.
- Rayman: The Lums are literal spark fairies, in the sense that they're actual balls of light with faces and small wings.
- Fairies in Stonekeep can apparently switch between spark-fairy mode and detailed mode.
- Terraria uses this look for both insects (fireflies and lightning bugs) and actual fairies (both the hostile kind that will attack you and the kind you can summon to produce light). Insects only appear this way when present in the world though, as they get a more detailed sprite in your inventory.
- Uru: Flying points of light (presumably insects) are an important plot element in one Are. They're attracted to your character, but dislike crossing water or getting rained on.
- Dreamscape: Eleenin can separate into a horde of these for defense. If they are destroyed, she instantly appears in a flash of light.