Summertime's Coming

The light at the end of the tunnel is glimmering at me... and though I spent all last night on one stack of papers, and another awaits me as I type this, I know the grading will end very soon.

Here is a summertime haiku, just since I'm in the mood:

Still shining sprinkles

Resting, waiting for the air

The golden sun sheds

Think you know what it is? Comment with your guess. Despite my horrid grading schedule (which should end next Thursday at the latest!), I'll try to post the answer tomorrow, with another haiku. If you'd like to go further (and have the inclination and the time), leave a haiku of your own!