I’m making an automation modpack with create, what are your favorite things to automate? eg. mud the vanilla way or warped wart blocks.

I'm making a modpack with changed recipes based on Twilight Forest and Create and I want to "use the whole cow" so to speak. There's a lot I've used and a lot I haven't but I want to gauge what the most fun or satisfying things to automate are.

Aeronautics is also here so I think maybe levitite might be something I put in somewhere.