Cleaning the Keyboard - Turn the keyboard upside down and shake it. In between shaking it you should stop and tap on the back of it to loosen any crumbs, then shake it again to remove debris. To clean the keys you can use a pencil eraser just some windex and a paper towel.
Cleaning the Monitor - Purchase a proper lcd cleaning kit and use it to remove dust and smudges from the screen. Mine says to spray the solution lightly onto the cloth then very gently rub the screen to remove dirt. Also remember to move the monitor and clean under it and to clean the base of the monitor.
Cleaning an optical/laser mouse - Use a soft cloth with hot water to remove any food or gunk from the exterior. Remember to wring as much water out of the mouse before hand because you want the water to evaporate asap off the mouse. As far as hairs getting into the laser housing, you could try opening it up and removing them, but I usually just use a mechanical pencil lead or needle to remove them. DO NOT allow the lead or needle to touch the laser.
Cleaning a ball mouse - Repeat regular exterior cleaning steps, then remove the housing for the ball and use a paper towel and alcohol to clean the ball. To clean the contacts for the ball, use something pointy like a mechanical pencil to remove the built up dust. After that you can hit the inside of the mouse w/ some compressed air and reassemble. Should be much smoother and responsive.
Cleaning a mousepad - You can clean mouse pads using hot soapy(very little dish soap) water. Remember to rinse out the mousepad with super hot water when you're done. Allow the mousepad to dry over the course of several hours.
Cleaning a keyboard wristpad - I personally just run mine through the clothes washer and allow it to air dry. It comes out completely clean and the sticky side just needs to be wiped after its removed from the washer.
Cleaning a computer tower - Before you begin, remember to power down the computer and unplug all cables. Then open the case and ground yourself by touching the metal or the power supply. Use a can of compressed air(or use an air compressor) to dislodge any dust build up inside of the case, should be done at least once a year.
