Trails is an add-on for After Effects which creates amazing, fully dynamic trails, swooshes and speedlines. You can set up a Trail in seconds, and apply dynamic effects to give even more life to your animation. With Trails, you don’t need to worry about what you want to create a trail on - it will parent to any layer regardless of expressions or crazy parenting setups. The trails created are completely dynamic and will update instantly to any change you make - so you don’t have to worry about updating them every time you want to move a layer over a couple of pixels.

Home page - https://aescripts.com/trails/