Take a Stroll After Dark
The sights and sounds of nature change completely once the sun goes down. Outfit the crew with flashlights, or even better, headlamps ($15 to $20 at Wal-Mart, Dick's, and the like), to light the way. Walk around the neighborhood or in a nearby park or field. Make it a hunting expedition to see and hear fireflies, cicadas, bats, owls, and other creatures. Take time to smell the fragrant (night-blooming) flowers, including moonflowers, daylilies, and angel's trumpet.