UI Particles – it's a simple extension allows you to add particles into your UI. UI Particles based on Unity Shuriken Particle System, you do not need change your particles. Simple add UIParticles script to your GameObjects with Shuriken Particle System, set it inside Canvas and you're done.

UI Particle System is advanced solution for 3D particles used in Unity GUI. Probably everyone who tried to add particles to GUI had problems with making the same type of particles going around buttons or culling inside scroll views, but with this plugin you will not need to worry about changing sorting orders, adding multiple canvases, etc. With it you can just add next particles to GUI in few quick steps.