I have many lists and they have changed over the years. (started when my daughter was 3 and now she's 32)
If you do a search here on the DIS for what to pack you will probably find lots of info. I don't mean to be unhelpful by not sharing all of mine, but, like I said, they are very long and many of the items, like my medications and mobility aids, may not apply to you and your family. Some general items: sunscreen, hat, sunglasses, hand wipes, spray mister for hot weather, cooling cloths, phone and charger cords, portable charger, camera, extra battery, credit card, license, Magic Bands, health ins. card, poncho, small umbrella, reading glasses, medications, cash, housekeeping envelopes, large carabiner clip for attaching refillable mug to bag, ziplocs of all sizes, moleskin, light sweater for AC...think I'll stop there!

Good luck in your search.