Tried and true after two trips to Disney and several m,ore to the Jersey Shore, Busch Gardens, etc. This list is for my DD when she was just-turned 3.
A large ziploc bag with two extra panties, an extra bottom, and extra top, and extra socks. (when they pee their pants their socks get wet!)
A large ziploc bag with a two piece bathing suit and water shoes (optional items depending on the park you are visiting and the weather)
A large ziploc bag with a pull up. (I was not dealing with diapers. If I had been, I would have probably utilized a second, dedicated bag for diapers and left it on the stroller most of the time)
A travel package of face and hand wipes
A travel package of flushable wipes
Several individually wrapped wet wipes
A "travel" roll of TP
A purse pack of tissues
A small bottle of antibacterial hand gel
A hairbrush with some ponytail bands wrapped around the handle
A travel tube of aquaphor
A princess chapstick (dude, we go NOWHERE without this)
Mommy's lip balm, face powder, blotting papers, (I'm a silky girl-- I wear makeup for the parks)
A little plastic box thing with some of each med that we might need for the grownups (gas x, ibuprofen, my migraine pills)
Tampons. Trust me. Murphy's Law of the Period is in full effect at Disney, too-- if I am within a week of "Day 1" I'll get my period at Disney. Usually on the day I wear something light colored, of course!
Sunscreen: a spray bottle of 15 or so and a small high octane tube (of 30 plus) AND a "face stick"
Sunglasses for everybody including Daddy (even though he is wearing a pair already)
Crayons and a pad of postits (instant stickers! that you can customize!)
A bottle of children's tylenol or motrin and a dosing syringe
Your ID and your park passes (and Daddy's, and Daughter's)
The autograph book and inevitable marabou topped light up pen (and some extra sharpies)
The camera: at least three rolls of film and extra batteries
A snack pack of crackers/ a couple granola bars/ some raisins/ etc-- at least three little items for a full day, and preferably a little variety
A hat (even if the darling child is wearing one leaving the room-- bring the extra)
An empty sippy cup that does NOT require valves.
Water
OK: Now, here is some reasoning:
I just always use the travel packs instead of buying big containers of the wipes and repackaging them because I have found that they stay wetter and fresher better and are more convenient in the travel packaging from the manufacturer. They take up less space, too. So normally at home I have my wipes and such in ziplocs but not for the themepark bag. I buy at home and take with me one pack of each per day plus an extra. When she was 3, I used every last one. This year, at 4, we didn't use them all but we came close! The individually wrapped wet wipes are the best thing when you are really on the fly and they can be stashed easily in Daddy's pockets as needed.
I like the flushable wipes. They REALLY help so much for everyone. I also take the TP because its a convenient back up to the tissues and other wipes. (I likes how its packaged) Generally, at Disney the bathrooms ALWAYS have plenty of TP and seat covers, but you NEVER KNOW.
I LOVE Aquaphor because it is so multi-use. Its diaper rash cream! Its for chapped lips! Its for chapped skin! It lubricates zippers! You get it.
Sunscreen sticks are very convenient, and very easy to use on the run and VERY easy for Daddies/ toddlers to operate themselves.
I know that its not the best thing child safety wise to repackage meds. But practically speaking, it works well for me to put pills in a plastic pill box. I just always keep it in a zippered pocket that is not immediately obvious and I treat my entire bag as an off-limits area. (In the room at night its on the highest shelf.) I have NEVER had a problem.
I take the Tylenol/ Motrin as a defense against Murphy's Law. I have only actually needed it once: but I was SO GLAD I had it.
Here is how I pack it:
I have a neoprene-y stretchy backpack I got from Lillian Vernon
(
http://www.lillianvernon.com/catalo...lder+Bag&parentCatId=6&catId=365&subCatId=368)
I pack things as organized as I possibly can, grouping DD''s stuff in their own internal pouches and mine and DH's in our own internal pouches. I also use the outside pockets for water bottles, sunglasses as needed (when on a dark ride) and for those inidividually wrapped wipes. There is a zippered pocket that is against your back and that is where valuables and meds hang out. UInfortunately the "ID pocket" on the inside of the top flap doesn't work on mine, but I just keep individually wrapped wipes there instead of park passes.
Utilize nesting-- if something (a cup) is empty-- nest something else (bottle of tylenol) inside it!
The main big body of the bag is where the clothes and hat fit--- wrapped as tightly as possible, with ALL the air pressed out of the baggie. I actually pretty often packed a sundress as the backup outfit because one of those simple tie on the shoulder sundresses takes up NO space at all. Even in size 4T. The autograph book should slide into that main part of the bag.
I found the stretch quality of the bag to be a lifesaver! DH could never believe how much stuff I got in there-- and it was still pretty lightweight.
I did not actually keep the camera IN there, I had the camera in its bag, attached to the strap of the backpack or else in my pocket or DH's. We never had any problems with that.
Hope this helps!