You will also need kitchen supplies (pots, pans, skillets, etc.) as well as bathroom supplies (toilet tissue, treatment).
Lots of the kitchen stuff, you can pick up cheaply at Goodwill or Dollar General, etc.
I have RV stuff that matches what we have at our house, but we spend 80-90 days per camping season in our 5'er. I have a knife block with good knives at both places. We usually use paper plates and plastic forks/spoons, but according to our menu, I might get out the real stuff. (You can't eat a good steak on a paper plate and use plastic forks).
We even have our RV clothing - stuff that we don't mind getting dirty or has seen better days, but is still comfy.
I have purchased towels and sheets for the RV - white ONLY! You can bleach them and get them clean, but it's hard with other colors. We don't use white at home and it helps to keep them sorted.