Adding insulation can reduce cooling and heating costs by up to 20%. Some utility companies even offer rebates to help defray the cost, and the cost isn’t that much anyway. You can add insulation to a 1500 square foot home for about 200 bucks. Extra insulation in the attic can easily pay for itself in a few years.
If you're at least 62 years old, you can score a $10 lifetime pass to America's federal parks and recreational lands. But act quickly because fees are about to jump.