From one of the posters here. Sorry I can't remember your name but thanks muchly for this list!!!!
AAA Card
A giant bag to put dirty laundry in for storage and to take to the laundry room
Airplane Tickets
All of my monthly/weekly magazines from the preceding month (I save them for the trip)
Aloe Vera gel
Anbesol (for toothaches)
Anti-bacterial gel
Automatic dish detergent packs (if staying in a place with a dishwasher; pack in suitcase)
Backpack
Band Aids
Batteries
Beach Towels
Bee sting kill wipes
Blister shield
Breathe right strips and throat spray (saves nights sometimes)
Brush/Comb
Camera & camcorder (dont forget tapes/memory chips, film, chargers)
Camp towels (use to wipe off water ride seats/park benches)
Candy(tootsie rolls, pop rocks to amuse kids while waiting for shows or in lines)
Cash
Change of clothes (put in ziplock bag in backpack)
Change of socks for all (ziplock bag in backpack)
Change purse for basic necessities and leave the big wallet at home
Chapstick
Clear Backpack (easy for security checks)
Clothes pins
Coffee and Filters (if staying at a place with a kitchenette)
Comb/Brush
Conditioner (if wanted)
Copies of flight info, drivers license, credit card, park tickets, and reservations (keep originals and copies separate)
Credit Cards
Dish Detergent (if staying in a place with a kitchenette; pack in suitcase)
Disposable dish cloths with dish soap
Downy Wrinkle Releaser
Dramamine
Drivers License
Dryer sheets (in case you do laundry)
Emergency Car Kit (if driving)
Empty collapsible suitcase for bringing home goodies
Extension cord (power strip)
Extra batteries
Extra contact lenses/solution/glasses (in suitcase)
Extra credit card
Extra hats to replace the lost ones
Extra pair of shoelaces for sneakers (someone's always breaks)
Eyeglass repair kit
Face Wash
Fanny pack
Feminine hygiene products (just in case)
Film canisters or M&M minis candy containers (for pressed penny machines)
Film
First aid cream
First aid kit
Floss
Glow sticks for nighttime in the parks
Green tea bags (place in water bottle - instant flavor!)
Gum
Hairspray
Hand Sanitizer
Hand warmer packets (in case you stay to watch fireworks)
ID card (laminated) for your child's pocket (put childs name, your name, your cell #)
If park tickets are pre-purchased a photo copy of the back of them in case they are lost
Inflatable bath pillow (for use on plane or soaking in tub)
In a small ziplock bags children's Tylenol, generic benadryl, a spoon measuring thing for the meds (for taking into the parks; put in suitcase)
Index cards with you plan for each day (be sure to include you ADR confirmation numbers, EMH, etc.)
Insect repellant wipes
Insurance, maps, tips, etc. (carry in tote bag with you on plane)
Jackets
Laynard
Make-up
Medicine (Advil, Aleve for the joints, Antacid tablets, Aspirin, Cold Medicine, Cough syrup, Headache medicine)
Memory chip for camera
Mesh laundry bag
Mini-fans w/mister (for summer)
Moleskin or other products for blisters
Mosquito wipes (for summer)
Motion sickness medicine
Mouth Wash
Nail file
Neosporin Antibiotic ointment
Nightlight
Over-the-counter temporary filling gummy stuff (from drug store)
Pants
Park Tickets
Pepto-Bismol (or Imodium)
Permanent marker (can be used to write childs name, your name, your cell # on childs back or for autograph books)
Petroleum jelly(Vaseline)
Plastic cups or Paper bathroom cups (don't trust those glasses by sink)
Plastic ID for security and keeping tickets in
Ponchos
Power strip to plug in the laptop, digi camera and 2 cell phone chargers in one easy location.
Powdered laundry soap (get from local Laundromat)
Pre-bought autograph books (get them at your local
Disney store and Velcro a BIG {i.e., THICK} pen for the characters)
Q-Tips
Raincoats
Razor (in suitcase)
Rechargeable batteries and charger for batteries
Reservation Confirmations
Retractable Sharpie for the Autograph book (with a quart sized ziplock to keep them both in so they stay dry!)
Roll of quarters and some singles for any tolls
Room air fresheners
Safety pins
Sandals
Scissors (in suitcase)
Shampoo
Shaving Cream
Shopping Bag
Shorts
Sleep aids
Small fans
Small flashlight (in case accident happens at night)
Small screwdriver kit for eyeglasses, sunglasses and putting batteries in the new toys (in suitcase)
Small sewing kit that has needle, thread, scissors, a button, and safety pins (in suitcase)
Small umbrella at the dollar store
Soap (for showers, if wanted; pack in suitcase)
Socks
Spare Contacts/Glasses
Stain stick or Shout Wipes
Stamps
Sterlite plastic containers (one is food items, one is medical items)
Store shoe bag (from $1 store for hanging over back of bathroom door)
Suction cup hooks for wet clothes (to hang in the shower)
Sunglasses
Sunscreen
Superglue (for broken nails)
Sweatshirts and Sweatpants
Swim Suits
Swimmers ear medicine
Tension shower curtain rod (mount directly over the bathtub for dripping wet swim suits)
T-Shirts
Tide stick
Toothbrush & toothbrush holder (from $1 store that way you can leave them behind, if desired)
Toothpaste
Travel size deodorant
Tweezers
Underwear
Vaseline
Wallet
Walkie talkie
Washcloths
Water bottle
Waterproof camera
Wipes (individual travel size)
Ziplock bags (for cell phones and cameras when riding the really wet rides) (of all sizes, snack to gallon, for various uses)
1/2 to 1 inch binder w/tabs for itinerary, tickets, park info, emergency numbers of doctors
Babies
Baby Bath (if portable)
Baby Food
Baby Soap/Shampoo
Baby Sunscreen/lip balm
Baby toys
Baby Wipes
Bottles
Car Seat
Carrier
Diapers
Diaper Bag
Diaper Wipes
Disposable Changing Pads
Formula
Nightlights
Outlet Plug Covers
Pacifier
Playpen (if portable)
Rash Cream
Stroller(Umbrella and reclining)
Stroller Sunshade
Swim Diapers
Children (of all ages)
Baby Wipes
Books
CDs
Magazines
Movies
Portable CD Player
Portable DVD Player
Sippy Cup (for toddlers)
Snacks
Travel Toys
Word Games