Sometimes it's good to have a few extra computer keyboard parts on hand. A Key-top puller (accessory) is always good to have, for removing keys. Your keyboard, like anything else, needs to be cleaned once in a while. The parts of a keyboard are: membrane, all of your keys, of course, along with the casing and circuit board. This site has a little more information:
. http://wiki.answers.com/Q/What_are_the_parts_and_functions_of_a_computer_keyboard. Here is a website with accessories you might be interested in: http://www.hooleon.com/menu-accessories.htm.