The ASMP guide to new Markets in Photography tells you to always have something handy so you can jot down notes and ideas. I've been doing this for quite a while now, even before I did this reading. The hard part is constantly trying to stay organized with all these random ideas. Organization often gets pushed to the side for more pressing issues like assignment deadlines. I've come to accept creativity will always bring a bit of chaos with it, the best I can do is make sure it's at least livable.