When I'm motivated, I read, draw, write, play video games, learn things...
I haven't been motivated for a while so my last outlet is just walking with no direction in mind until my body hurts. It really helps, even though I can't walk for days after (disabled). It's like the tamest scream possible.
I gave up self-mutilation, drew too much useless attention to myself. I'm overly fond of hitting myself still, I learned some ways to inflict real pain.
I read classics too, not so much non-fiction these days as I consume a lot for school. Classic literature is nice. It's a bit solitary.