Daddypig and I are going to try to do one nice thing for each other every day - nothing huge, just something to make the other person smile.
I remember that dp used to leave notes (written ones, not money ) in my books or in odd places for me to find. He doesn't do that so much anymore, so I might ask him to start again. He sometimes comes home with flowers, and I've stopped getting suspicious and started to enjoy them instead Occasionally (very occasionally) I might give him a foot massage after the kids have gone to bed.
Any other ideas...little gestures you used to appreciate, or things your partner still does for you that lift the fog from an awful day?