The 30 Day Project?

So I have decided, though undecided, to start a side blog/project. The project would involve me doing something interesting or controversial or experimental and I would have a goal. Like Julie did in Julie and Julia. And I would give myself 30 days. Which is sort of like what Morgan Spurlock does when he becomes someone else and lives their life for 30 days. I just haven't quite nailed it down yet. Something I feel passionate about, or something I really want to experience, or something I want to report on...I'm just sort of stumped. If you have suggestions, I am open. The only stipulation is it must be legal and it must be relatively low in cost. I was kind of thinking maybe I should just take suggestions because its better to write for those who might actually be interested in reading about something. I don't know. Hit me up with some ideas.