I'm thinking of letting our museum memberships lapse because these days we seem to be getting most of our out-of-the-house entertainment at the beach.
On warm days Jack will splash in the surf as long as we let him.
On cold days we bundle up and walk along Ocean Beach. We watch crows picking through the sand for treasure and then burying whatever they find. We explore any random sand pits and write numbers in the damp sand. We bring a plastic bag with us for garbage. This inevitably escalates to "what's the weirdest thing we can find today?" Yesterday it was a toothbrush and a birthday candle. Today in addition to the usual straws, candy bar wrappers, and cigarette butts and we found a fork and a dime.
I love strolling while gazing at Mount Tam, the Headlands, and Point Reyes -- what a magical view!