I missed this topic when it started a few days ago. After reading all the lists, I'd recommend only this to a new trailer owner.
Use KISS method - keep it simple. Bring the MINIMUM you need at first.
You need to be able to level and chock the trailer.
You need power.
You need to be able to store, cook, eat food and clean up after.
You need a source of drinking water.
You need to be able to empty your tanks.
Now, get a notebook or the electronic equivalent, and GO CAMPING.
Repeat three times.
Note on your list those things you needed and didn't have.
Note on your list those things you did not bring that would have made things more comfortable.
Note on your list those things you brought and didn't need.
Walk around the campground and ask other campers if you see something they have that looks handy or useful. We all love to show off our toys and ideas.
Now you have YOUR list.
