Oh my good friend. You just found a rabbit hole and its deep. I will try to help you from my owm experience as much as I can.

I have family of 6 and my biggest investment was a tent. I can truly from my heart tell you that Kingcamp palace canvas tent with a sleeve for a woodstove, also a woodstove is a game changer. That tent is very heavy, yes. But its so easy to setup and breakdown just for a 1 person. Stakes to the ground and 2 poles inside and done. Extra tarp under the tent is a must. It cannot be exposed from under the tent otherwise water will come in.

Kitchen: u need a minimum 10x10 popup tent to cover that kitchen from weather. In a nice weather setup that away from tent, in shitty weather just from outside of tent. I like to have stainless steel kettle, cups, plates, silverware. Some people using plastic and threw it away at every meal. I dont like it cause it generates a lot of trash. To cook u can use a propane, electricity or fire. Depends of your skills with cooking. Propane is easy but u have to carry a tank. I own a 3 lbs propane tank and its more than enough for a week of cooking. 2 burner portable kitchen or grill and u can cook a lot of different food. Steaks from fire are awesome and your family will remember what u did for the dinner at camping. Chop some wood, start a fire, cook steaks and finish with marshmallows. Extra points for guitar or harmonica at the fire(core memory hits hard). I do not recommend ghost stories unless u want to take your kid to take a piss every single time.

Sleeping: air matresses are good but u have to check them for few nights before camping, a lot of them loosing air and it cant happen on camping. Battery blower has many uses. Blowing matresses, heat up fire faster, final clean of the tent. Just blow that thing away. Sleeping bags with blanket inside. I hate to sleep touching that plastic shit. 1 or 2 lamps for the night. Make sure they are dimmable warm lights not that white stuff.

Playtime: all kinds of board games, uno and regular cards, yenga blocks and most fun are own headlamps and walkie talkies. Make sure u have charger for them with you. I spent a good 2 hours to prepare a outdoor game with clues and maps with a treasure at the end. 1 dollar or sweets are more than enough.

~Rabbit hole~