zip locs are a must, gallon size best. use for last day wet clothes, cameras, seashells (they get smelly), sandy watershoes, and rum&hot sauce. mine opened in the suitcase, no problem!! bring deep woods bug spray, and BENEDRYL CREAM. stopps the itch. bring waterproof band aids, and neosporin. spf 45 and 15, 8 if youre brave. snacks that dont melt are nice to have. extra t shirts for snorkeling...dont burn your back! have fun.