Biggest Loser Weekly Fitness Challenges

I am hosting a Biggest Loser Challenge at my work. I would like to do weekly fitness challenges for points. Does anyone have suggestions? I need eight, and here's what I have so far:

1. Obstacle Course
2. Jump rope or hula hoop
3. Hughes Mt Hike (Capture the flag)
4. Guess the calories of this meal (picture)
5. How many burpees do you need to do to burn off the calories from _______________

Thanks! :)