My suggestions:
1. Drugs (alcohol, others)
2. Hobby - photography, collectibles, magic, SCUBA
3. Exercise - run, bike, join a gym
4. Fight Club
5. New instrument (guitar)
6. Pick a challenge, like develop a new skill
7. Join a sports club (rugby, soccer, javelin, frisbee)
8. Hikes through the woods
9. Rescue a dog or cat from a shelter
10. Try painting or sculpture - DIY or class
11. Become a sports referee
12. Fantasy sports league
13. Read, read, read. Find great books.
14. Become a pilot.
15. Volunteer
This is your life, and it's ending 1 minute at a time. KNOW that someday you're gonna die. Don't piss away your life.
Tyler Durden: "Man, I see in fight club the strongest and smartest men who've ever lived. I see all this potential, and I see squandering. God damn it, an entire generation pumping gas, waiting tables; slaves with white collars. Advertising has us chasing cars and clothes, working jobs we hate so we can buy shit we don't need. We're the middle children of history, man. No purpose or place. We have no Great War. No Great Depression. Our Great War's a spiritual war... our Great Depression is our lives. We've all been raised on television to believe that one day we'd all be millionaires, and movie gods, and rock stars. But we won't. And we're slowly learning that fact. And we're very, very pissed off."