Here's a few more:
First aid kit:
- many bandaids various sizes
- polysporin
- tylenol
- ibuprofen
- immodium
- pepto bismol tabs
- bandage
- a decongestant/cold medicine
Miscellaneous
- extra pens and writing paper (for exchanging addresses, and makes a good "givaway" at the end
- gum (for your ears on the plane)
- swiss army knife (always comes in handy)
- hand sanitizer or hand wipes (especially if you will be off your resort)
- small cloth purse for the ladies (why do women's clothes never have pockets) - skip this if you have a husband who can carry your room key, lipstick and camera in HIS pockets for you
- sunglasses
- jewelry (the cheap stuff)