The industry leading Color Palette for AE. 
Ray Dynamic Color not only gives you a color palette to color with, it can also create clever links between the color values in your scene and the color palette. This give us many options to manage colors.

This tool conveniently stores textures, including their layer settings, applied effects, keyframes, expressions and layer styles. It’s simplicity is key: After you’ve set it up once, all you need to do is press one button, which pulls that layer into your current composition—or you can apply it directly as a texture to any selected layer. 

Create multiple strokes on one single path. This can quickly create some really detailed looking stroke effects in your project.

By Remco Janssen — These are the create shape buttons from Ouroboros for KBar. Easily add a primitive in your comp as a parametric- or Bezier shape.