Fold up Hamper, I got it at Walgreens for a couple of dollars. It makes my room seem so much cleaner. Ziplock bags for everything (Gallon and sandwich). We use them for wet closes (mostly panties as we are potty training) and left overs at the restaurants. Thermometer, pediacare, children's Tylenol, nail clipper, band-aids. We also take a nightlight (If you have a MK view in the tower of Cont., mine might still be there, we forgot it in October). This time we got a push light and will just set it on the floor near my dd's bed. The moleskins were a life saver on our last trip (thanks disboards for teaching me about them). We bring our own bottled water. I have also forgotten my cell phone charger and sun glasses in the past. If you are potty training or just potty trained post it's to cover the sensors on the toilets. I have also brought a small flash light for my 3 year old to carry on the dark rides.