Make a list of things to do in a hospital waiting room
Post on your blog
If you don't have a blog, set one up. You brought your laptop or tablet, right?
Do your homework. Statistics, anyone?
Play Pokemon on the 3DS
Talk to strangers who are also waiting
Watch the news that is most likely playing
Watch your favorite show on Netflix
Are you a manager? Write a new list of tasks for employees.
Balance your checkbook
Try to make the coffee taste good. Give up and drink it anyway. Burn your mouth.
Read a book
Read a devotional
Color in a coloring book. Happiness is a new pack of crayons.
Take a nap
Do the crossword in the newspaper
Pay bills online (free wifi, right?)
Play on Polyvore some more
Turn it into a pretty list with the Pages app