What ways to appreciate a man?

In a relationship where a woman is treated like a queen (flowers, door opened, etc.), how can she show appreciation and treat him like a king?

Preferably no sexual answers (sex is mutual, not a reward). I’m looking for similar but different small actions that make the man feel good about himself, appreciated, and also want to continue doing those nice things for the woman.

Edit: if you have ideas on how to appreciate men outside of a relationship too, please share.