I'm not sure if you were talking about packing for the trip or for the day at the park. I wouldn't say I pack anything out of the ordinary in my suitcase, but in my bag for the park I always carry 2 things, every time I go. A sunblock stick (looks like a glue stick but a little bigger, filled with solid sunblock) as a redhead I can burn anywhere, any time and the sunblock stick is great for re-applying to your face, plus you can do it in line waiting for rides! and I also pack a little spray bottle (can be purchased in a 3 pack at the dollar store) or 2 or 3 filled with water. Sometimes you can get downright hot and just want a spritz of water to cool you down. These work perfect. They are nice and small and refillable so they will last you all day. And neither take up more room than a juice box