Lets see.......Flares, ocean pak first aid kit, oxygen, 30 survival water paks, PFD harnesses, tethers, whistles, knives, skyblazers and strobes. .357 magnum bangstick and bullets. motion powered flashlights. Radar reflector, space blankets, sunblock, hat, toilet paper, GPS, 2nd Epirb, VHF, hand pump horn. butane lighter. led flashlight. waterproof matches, waterproof pill bottles with emerg. meds. fishing kit. solar battery / cell phone charger. Leatherman multitool, neck knife, blah blah blah.....
And I'm always adding more.........I don't just think of what I might need.....I try to think of WORST CASE SCENARIO!!!!!
I'm working on adding a AED. (shocker paddles) But I'll probably keep that separate so as to make it instantly available as seconds would be critical. And when you're 40-50 miles offshore, the CG might not make it in time.