Athletic

1. Do 50 push ups
2. Swim 50 laps
3. Play 50 tennis matches
4. Walk 50 miles
5. Ride my bike 50 miles
6. Lift 50 pounds 50 times
7. Demonstrate 50 yoga moves

Community

8. Plant 50 trees
9. Feed a meal to 50 homeless people
10. Do 50 hours of community work
11. Make 50 people microloans of $50 dollars through Kiva.org

Intellectual

12. Read 50 books
13. Watch 50 award winning movies
14. Memorize 50 Haiku
15. Memorize 50 passages from the Bible
16. Write 50,000 words about the experience
17. Make 50 blog posts about my experience

Social

18. Send 50 books to 50 friends
19. Fast for 50 hours
20. $50 every week for 50 weeks on yourself
21. Write 50 words