As you can plainly see, we’re embracing International Caps Lock Day with full gusto. Go ahead, try it out in the comments. Caps lock is the cruise control for cool. Surprisingly, there are quite a few full time haters of the key running campaigns: CAPSoff and anticAPSLOCK actually united to form CAPSoff.org to further development of a caps lock free keyboard.
Once you’re tired of yelling at people online (like that’ll happen), you might attempt to do something useful with the key. In OSX, you can remap the caps lock key in System Preferences > Keyboard & Mouse > Modifier Keys. You can make it an extra Command, Control, Option, or select No Action. If you want to map it to another key entirely, try a program like fKeys. You could map it to Esc to make Vim—THE BEST TEXT EDITOR EVER—easy to use. In Windows, try this handy guide from TechRepublic for remapping your keys.
If ease of use is not your goal, you could always make a random caps locker hardware dongle.