According to Piper, this is what the beach looks like:
There is always a rainbow at the beach. Your mommy is always with you. And those big bright shiny things in the sky? That’s how bright the stars are at the beach. Sometimes you see shooting stars, too. Your rainbow protects you from their fall.
Your mom carries a sand bucket and a shovel for you at the beach, too. Oh, and mom is green. Either green was the only crayon available or Piper watched the Wizard of Oz at the beach for the first time. But, really, if your mom was a witch, would she carry your sand castle making implements? I don’t think so.