Strap marks on your backside when you get up from a lawn chair.
Hot dogs on the grill, the simplest, best tasting supper, especially when burnt just a little.
Fireflies at twilight.
Crickets you listen to from the porch.
A frog hopping under the plants as you water your flowers.
Watching the sun reflect in the water, enjoying the bright flashes as the ripples move through it.
Fresh laundry flapping in the wind.
The almost silent swoosh of a curtain as it blows out, then falls again to the window.
Sloshing through the water from the hose and suds flying as you wash the car.
The smell of summer on a cool evening after a hot, sunny day.
The beauty of a tomato plant with promises of what's to come hanging from it.
The peony waving in the wind.
The sound of the hoe in the dirt.
Flip flops on sand.
A picnic on a quilt.
The smell before a thunderstorm.
Kids blowing bubbles and giggles chasing them.
Watching a classic car drive by.
The sound of the crowd as the fireworks begin.
Anything you'd like to add?