Amy on My happy crazy life figured out and created her adjustable outdoor PVC canopy over the sandbox for her kids to stay cool in the sun. It looks pretty easy to make with shower curtain rings, grommets, canvas, PVC sprinkler pipes set over stakes. You can sew the canopy, too. But be sure to measure the size correct for the seating areas to cover, as Amy mentioned.
Image and Instructions: My happy crazy life
The PVC Backyard Sunshade from Kreative Life is creative, and more eye catching part is to add flower pots through the rebar before holding the PVC, which is more detailed with natural beauty.
Image and Instructions: The Kreative Life
