Wisp Effect
I built an effect a while back for use in a personal project that looks like glowing "wisps" of light. The effect ended up being used in a campaign for Travel Alberta but I digress. The code here compiles to a paltry 2.8kb so its light on space but can be a bit heavy computationally if you abuse it. Here's what the effect looks like. I'll be packaging it up and releasing it under the MIT license in the coming weeks.
Click anywhere on to spawn a new random wisp.