What are your favorite healthy snacks?

I saw my doctor recently and while talking about what a lazy fat-ass I am, he mentioned something about replacing the crap I usually snack on with healthier snacks like seasoned air-fried cauliflower or something like that. So what are your favorite healthy-ish snacks that can be made relatively quickly when I feel like shoving food in my face for no reason other than boredom and force of habit?