A fresh coat of paint does wonders. Try your hand at one of the faux techniques that are so popular including sponge painting , creating a ragged effect or a fresco effect . There are roller covers now available that will help make the task go faster. There are even striping rollers, which give the illusion of striped wallpaper at a fraction of the cost. If not paint, consider a new wall covering or even a simple border.
Molding can be the finishing touch in any room.
If you are handy with a saw, try topping off your wall cabinets with crown molding . All you need to do is make straight cuts. If paint is the way you want to go, consider pine, and fill over the head of the nail with spackle. Replace the countertops. Countertops take a lot of abuse and can look worn and drab.