L.S.
Oh gosh....I keep toys, a change of clothes, a light jacket, extra diapers, cup, plate, bowl, spoon, wipes, hand sanitizer, sunscreen, hat, books, granola bar, individual pack of goldfish, bottle of water, chapstick, swiss army knife, first aid kit, flashlight, shovel, blanket, potty, booster seat, stroller.
A lot of it I switch out seasonally or every month or so. I've also got 3 kids ages 5 months, 3 years and 4.5 years so there's a LOT of stuff I end up packing around! LOL