Plan to rent a car on vacation – Pack your toll pass transponder device. Many can be used at Toll Plazas in other states if you are in America. In Illinois for example vehicles with an I-Pass device pay half of what the cash lane charges. You will save $7.50 or more in some cases.
Sign up for a twitter feed that offers deals – Example – @AmazonDeals, @RetailMeNot, @couponkid (recently tweeted a $10 coupon with a purchase of $100 at hotels.com) @AARPMemberAdv on twitter for alerts available to AARP members