1). Banish winter and update your mantle. Take down the art and swap for another piece in your house. Lean large framed photos instead. Bright yet subtle mercury glass adds a metallic glint that's fresh and great year round. Try emptying it up everything. Maybe it just needs to be playing during the summer.
2) Nothing is better than curb appeal. How about door paint? A couple of potted plants look great. Add a bench. And you're done.
Change your lighting. If you can't change your fixture then install a plug in or in wall dimmer switch.
Improve your faucet. Get better water flow, a new style, and more efficiency for under hundred dollars at Home Depot. Quick and easy to replace especially those by Kohler where they are designed to be installed by the homeowner.
Paint something! An old chair, your stair rails, the back of your bookcase, your front door, even the light fixture hanging in your entry. Takes only a couple of hours and voila a new look.
Got shelves? If not, go buy premade add moldings and you have a beautiful built-in bookcase
Lighten up your outdoors with string lights or solar fixtures. The options are nearly endless, and you'll have a new look with energy savings.
Update your kitchen backsplash. With the new mosaic tiles installing a 12 x 12 mesh is rather easy.
Organize your pantry. Or pick a space it's important, like your garage your office. Just do one and the weekend completion will makes you happy all year.
Add architectural detail. Put new moldings around your door, and a chair rail to the dining room, trim out a window. For under two dollars a linear foot, you can get some beautiful moldings at the big box hardware stores.
Swap out your bath or kitchen hardware. Check out target, Home Depot, and even Amazon.com for some beautiful hardware that'll make a big difference in your space.
Don't have a backsplash? Hate your walls? Add bead board. Premade 4 x 8 sheets make it easy, and you could even get them cut to fit at a lumber yard.
Update your bedding. Go white fresh and simple for a cozy cooling summer feel.
Hate your interior doors, add molding! All those flat faces will look beautiful. Have glass doors, add some interior moldings and completely change the look.
Update your window treatments. Swap out the blinds at a panel take them off for the summer, give yourself a fresh outlook and view.