Paint is by far the easiest and fastest way to perk up a tired house. Nothing will please you or your neighbors more than a well-chosen (and well-applied) coat of fresh color.
As a kid, popcorn was such a joy. Now that you own your home and have it on every ceiling in the house, not so much.
You may think of your home's exterior as the castle walls shielding you from the evil effects of Mother Nature. But guess what protects those walls from rain, snow and wind?