I don't have any exotic hobbies or anything. My biggest hobbies are gaming, watching films and reading books.
In total I think I've spent over 2000 euros on video games over the course of my life. For DVDs and my cinema subscription I think I'm leaning towards 700 euros and for books only about 150 euros. These hobbies don't have to be that expensive.
They do take up all of my spare time though. I spent about an hour or two per day playing video games on average and I check out about two to three films a week usually. Book reading I usually only do just before I go to bed or when I'm in the public transport so that's half an hour per day or something.