My wife loves shelling and looking for sea-glass, so we bring small mesh bags to put her treasures in while she's searching for them.

I bring a waterproof resealable bag on a neck-lanyard to put my wallet, boat papers, etc. in for the dingy ride to shore.

We also bring a very large waterproof dive bag for carrying towels, coverups, cameras, etc. to the beach, and also for carrying goodies we bought ashore back to the boat.

Dingy rides can be wet - especially going back from White Bay, Jost to Great Harbor. Last trip the kids in the bow were wearing their snorkel masks on the ride back!