If I had to choose only one script it would be this one. Allows you to copy and paste ease values between keyframes. Bless this script.
I use this every day to set rough ease values (always refine in the graph editor btw). Also use the “Null” button and Reposition Anchor Point functionalities errday all day.
It’s really dumb that After Effects needs a script to do this…but it does. And if you ever work with Shape Layers and strokes, this will save you a heckin lot of clicks.
Does exactly what it says…save a comp as its own project. Makes it much cleaner sharing comps between projects. There’s also a bunch of other settings I don’t use.