Good hobbies ideas..........?

I am a teen age boy. i mainly watch TV and play video games. which is making me gain weight. Can someone give me some good ideas? i will try anything really i tried kniting a spongebob and gary for my 1 year old baby bro and he loves it so im opened to a lot of things i tried building toy modles. i played football for school i didn't like it. i know i can do sports so try not to list a lot of sports. anything will help.