I'm gonna give you some advice that you might not want to take. It worked for me but I'm an extreme person. I'm an asshole really. Please don't anybody get angry with me
[...]
Eventually my parents got used to everything.
Parents can be bad but if you take things up a notch they won't fret over little things anymore. I suggest you rub extremely bad behavior in their faces and desensitize them to it. If they're used to finding drugs all over the house they won't even bother searching your room anymore. Sure, they threatened to call the police but I knew better than that. If the police think you're dealing drugs in the house they can take the house from your parents. My dad being a cop was well aware of this and I knew he wasn't willing to risk it. Also, when my parents started asking for $200 a month I got really mad and told them that I would start selling drugs to cover the cost. My mother got angry and said she would call the police so I grabbed the phone like a smart ass and told her, "Here's the phone bitch. Go ahead. Call them! Just make sure you don't get pulled over one day with quarter pound of weed in your car when you're on your way to work."
Eventually, I did get kicked out. They had a cop come to the house thinking they could just evict me right then and there. Turns out they had to give me thirty days notice and they also had to go get a formal eviction notice. It was the best thing that ever happened to me to be honest. I came to realize I was just being extremely childish by staying at home and getting my way. It would have saved me a lot of heated arguments if I had just moved out after getting my job at the hospital.