Wash the dishes, take out the trash, give her a break, let her know she's apreciated. Start slow, let it build, then finish strong. In other words, schedule time, put it on the calendar and treat it as an important part of keeping yourself and the family running smoothly.
Most guys are sooooo easy.
Tease him, just don't be a tease. Women love that. And, the beauty is, almost anything will work. Surprise her with flowers, with a card, get a baby-sitter for the evening, put a note on the windshield of her car. Almost anything will work, just be kind, be gentle, and put a little thought into it.