Add some crown molding above the cabinets and around the walls for a finished look. Install storage aides such as pull out baskets for pots and pans, groceries and cleaning supplies inside your cabinets. If you have the room add one for trash. All of these ideas add to the the value of your home as well as making your life easier in the kitchen. Try Stacks and Stacks for storage items.
Area lighting in living rooms, dining rooms, all add to the ambiance.
Small can lights placed on the floor behind plants and trees cast light up to the ceiling creating soft interesting patterns. Candles placed around the home add a warm cozy feeling. Vases, books, statues, floral arrangements add interest add a focal point to any room. Don't forget about the bathroom, bedrooms and office. There are many simple and inexpensive things that can make your house a home.