Maybe I missed it, but I didn't see a water filter and I would recommend one. Some places have well water.
Also a good *dimish* night light. With the shades closed in my TT, it's very dark! LED lights are way to bright to sleep with on. And I often camp with dogs, i want to make sure i don't step on them while making my way to toilet in a mostly sleep state in the wee (pun intended!) hours of the morning.
I've found a popup shelter to be very helpful in keeping table/chairs dry.
I'd also recommend the following:
flash light / headlamp, some sort of "jack" to change flat tire, coax cable, fire tools, axe/hatchet, fire starting items including lighter, storage containers/bagsfor left over food stuffs, napkins, paper towels, cleaning products (dishes, tables, floors), broom & dust pan, trash bags. Basic tools - make sure they "fit" your hardware (sockets, wrenches, etc).
For cooking using dutch oven, i recommend parchment paper liners. For cooking in crockpot, I recommend crock pot liners - both aid to shorten cleanup times.
To change tires, i opted to go with breaker bar and sockets (my spare lug is different size than lugs on TT). Takes up little room and is easier in my opinion to use than 4way and less likely to break/bend (yep, i've bent 4 way before). Plus you have added bonus of having a breaker bar that can fit bolts of any size!
