My sister isn't even obnoxious or living at home anymore though, she simply has hobbies that take even more space than mine (brewing), and her books haven't moved since the first time she moved out of her appartment. She also has a crapton of books, and when I say a crapton, I do mean a crapton

Use a hairdryer. I know it will look weird using a hairdryer on your MOC's, but trust me.

