From Tori Friedlander in Israel
TV screens and monitors - use a drop of liquid dish detergent mixed in with water on a rag. Screen comes clean without causing any damage to the monitor itself.

From Rochelle Jourdan
in NY, USA
Clean Compact Disks (CD's and CD Roms) by holding them with your finger in the center hole and stabilizing it with your fingers on the outer edge. With rubbing alcohol and a tissue, start swiping the CD in one direction from the center hole to the outer edge. It couldn't hurt to clean both sides of the CD, especially if little people fingers have touched them.                        

Clean your mouse by turning it over and unscrewing the bottom so the ball falls out. With a cotton swab dipped in rubbing alcohol, clean the contacts and anything dirty. Clean the ball with alcohol on a tissue.

Clean your track ball with rubbing alcohol on a tissue. Keep moving the ball around making sure to get all the extra bits.

For a quick clean job of your keyboard, clean the frame and keys with detergent on a damp cloth. If you don't have a can of compressed air, you can always blow out the dust and particles.