lol If I cought one of my employees sitting an entire day just readin internet crap because "he has nothing to do" I would kick his ass :D
Ask your manager what to do (maybe the toilets need extra cleaning or something lol).
talk with collegues, ask them to go down-stairs together for a cup of coffee/dessert(there is a big shopping mall downstairs, lol ), review quantum mechanics, prepare for kick my boss' ass harder if he wanna kick my ass :D
1. Read a book
2. Listen to an iPod shuffle (in one ear)
3. Write a letter
5. Do excercises on your office chair
6. Drink water
7. Email a family member
9. Chat on Gmail
10. Make a prank phone call
11. Play with apps (on an iPhone)
12. Write a book
13. Work on homework
14. Research places you want to visit
16. Online stalking?
17. Learn a new languge (via ipod or Rosetta Stone)
18. Write out secrets.
20. Donate money to a charity
21. Have a staring contest with a co-worker
22. Drink tea
23. Crack your knuckles
24. Write a play
25. Sit on a pilates ball (medicine ball)