The best travel bargain is the yearly pass to the National Park system. I bought my pass June 2014 for $80. I used it for 3 days in Yosemite ($20 a day per car = $60), then I used it in Zion (+$20) and then Grand Canyon (+$20). So I ended ahead. I ended ahead from day one, because it is a bargain to have access to such beauty in nature for just $20 a day.
So get off the couch or pool lounge chair and grab your car keys.
Go take a hike at one of our National Parks.