LOL-I always joke that they have more luggage than I do...It's probably true
You got a good list there! Mine is large too....lets see-
Usually 2 different carriers, bed, blankets, xpen (sometimes 2), peepads and pishpads, papertowels/cleaner, ice chest with their cooked food in it, leashes and harnesses, grooming supplies, "outfits", toys, bully sticks to keep em busy along with their favorite treats, car seat is in the car and now I have a stroller I get to bring along too
Oh yes, poopy bags and bottled water too