We have pretty much a duplicate of everything we need for daily use in the house. Yes, there's more expense doing it this way but for us the personal convenience is very well worth it. It started out as just personal convenience but the trailer soon became a pretty good bug-out vehicle, virtually everything we might need except for food. Some of the stuff we tote that might not immediately come to mind until you park at the lake or wherever:
The Checklist (never take off without it!)
Notepad to list the stuff you don't want to forget again (we write our list on the fridge door)
Bread bags (great for leftovers and MUCH better than store bought doggie-dew bags)
Umbrella(s) & rain gear
Plastic tablecloth roll (Amazon, last one cost me less than 10c/ft) DW won't use the campsite picnic table without it
Bird ID book
Books/magazines
Extra batteries
Sewing kit
Small plastic tarp & PVC pipe for windbreak
Search & browse thru this and other RV & camping websites. Shortly after we got our trailer DW & I spent a cold & wintry weekend plowing thru websites & posts. Unimaginable how much good info is out there once you get past the snarky comments that so often reply to legitimate questions.