Making a new custom interaction and tuning for an object

I've created a custom object that's a fortune teller Crytal and I want to have a new custom interaction to go along with it something like "Predict Fortune" and have it randomized between pre-set fortune messages that will appear as a notification, have the sim have a reaction, and maybe the Crytal ball float in the air etc.

What's the easiest way to accomplish this for someone who's a beginner at coding this type of things.