Brainstorming help needed please...

I want to make a list of various hobbies people have that are likely to have a lot of people who are TRYING to become professional at it -- make money with it.

Need longer lists and maybe other lists...

Performing arts -- like magic, juggling, etc. (need a longer list)

Writing (author)

Crafts (jewelry making, etc)

Again, anything where many people are trying to go from hobbyist to professional.

Any additions to these lists (or other lists) would be greatly appreciated.

Thanks!!

-- TW