Well there are some great website out there to get you jump started on some great new hobbies.
You could start by taking this online quiz that i have used as a source link.
Good luck in finding a new hobby!!
Link: http://www.lifescript.com/quizzes/fun/what_types_of_hobbies_are_for_you.aspx
You might be best off going to the library and getting some books on some cool things to do. You could spend the whole day there and find some really interesting ideas. We used to do this on rainy days and would keep us busy for weeks.