A cool toolset that allows you to easily create some fun secondary motion, based on your keyframed transform properties ! Whether you want a stylish cartoon look or to add some subtle overlapping actions on your animations, you’ll certainly find the tool you need among the 9 tools available in the set !

1 useful springy Parent constraint ;
7 jiggling deformers (Bend, Shear, Squash & Stretch, Jiggle, Bulge, Twist and Liquid) ;
1 powerful springy Custom effect

Using the toolset for the first time is really easy !

Just select a layer that has some keyframed motion on its position ;
Then click on one of the Springy FX’s position based tools (Bend, Shear, Squash & Stretch, Jiggle or Liquid deformers)
See the magic happen ! Your layer (it has to be a solid, a footage or a precomp since Shape and Text layers can’t be deformed properly with this method) has now a nice springy overlapping effect that reacts to your position animation !

So, here is a detailed explanation of how it works

Each time you apply one of these effects on your selected layer by clicking on the corresponding tool’s button, several things will be created for you :

a new layer with the same name than the first selected layer (because some of the effect’s, like the Parent constraint or the Liquid deformer can handle 2 selected layers instead of one), followed by “Spring Constraint CTRL” ;
a new pseudo-effect called “Springy Deformers CTRL” on the first selected layer, where the dropdown layers list called “Spring constraint layer” refers to the “Spring Constraint CTRL” layer described above (do not change or remove this effect !) ;
a bunch of expressions, that are linked to the “Spring Constraint CTRL” layer’s effects, on your selected layer’s transform properties if you use the Parent constraint, on some newly created effects if you use one of the 7 deformers, or on the selected property for the Custom effect ;