One thing I do that makes my husband feel like a million dollars, is when he comes in from work, if the house is clean and put together, and quiet, and he sits down comfortably in the living room, I serve him a platter of nuts/fruits/coffee or tea, with a smile, and sit with him and give him my company.
Even after that, if a wife will show that she wants to help and serve him in all his tasks for the rest of the evening, like preparing for tommorrow things, his lunch, or his clothes.
Even if I am not happy I notice that if I just pretend or try it makes him happy to put on a smile.