Well i would break it down into categories, think about what you do at home with a few changes. But size and quality depends on your wallet size, such as you can buy a sleeping bag for £30 or £300, items you may need such as:
Sleeping: Depending on budget, how many will be sleeping with you depends on what you want to sleep in.
Kitchen: Again it depends on your diet and what you cannot have to eat or drink.
In this photo you can see the Saber 45 with side pouches by Karrimor, cost £130
In this photo you can see the pie tin, I got 2 for £1.99, ideal for baking in i use 2 of them to create a oven, they are light and simple, you can make a wooden pan handle while in the woods. I use binder clips to clip two together like a UFO and and i just pit in the fire to cook steak, pizza etc.