Anything you use in your house, you can use in your camper. You DO NOT need any specialty items that are marked (RV use only), or some such thing like that! Or even marked "RV". There are zillions of other items that can be used and will cost a lot cheaper.
Think of your camper as an extra room in your house, except it has a kitchen, a bath, a living space, and a bed. Now, if this were a second room in your house, what would you put in it? How would you supply it? That's pretty much what you do with your camper.
Tool? The sky is the limit. I carry a basic minimum. I have a tool box I keep in my truck all the time. That's sufficient.
You will need chocks for the wheels of the camper, a water hose, and a sewer hose. You may want to get a water pressure regulator for the hose because some campgrounds have really high pressure and can blow your inside plumbing out! I quit using hoses hooked up directly to the camper, and fill my fresh water tank, and pump from it. The on-board water pump will never exceed the plumbing limits this way.
You may want to invest in an extension cord to plug your camper in. This depends upon where and how you camp. (Myself.... I have 135 feet of cord, and carry 200 feet of garden hose, and 50 feet of sewer hose... I'm prepared for anything!) But we never know where we'll be camping next week, or what the campsite is like either.
Sheets, blankets, pillows, pots, pans, dishes ... anything you use in your house! You have to decide if you are cooking over an open fire, or the stove in your camper, or something else, like electric skillets or electric or propane griddles. This will also drive what kind of pots and pans you should use and have.
Hey, it's all fun! Start simple, paper everything ... and work your way up over time! WallMart and yard sales are great places to get started. And you can always advance as you get more time and experience under your belt.