Accessory denotes an object or device aiding or contributing in a secondary way. Accessories is a general term which have something to do with supplemental or subordinate element added to another entity, appendage, or attachment ; that can be added or connected in auxiliary capacity. It may refer to:

Fashion accessories that help to bring up the spot that one wants to highlight in a dress or apparel and hide some flaws in the dress. These fashion accessories include handbags, jewelry, belts, hats, etc.
Computer accessories since most operating systems nowadays require the use of a mouse, one of the most important accessories, aside from the mouse itself, is the mouse mats/pads that help in improving the performance of the mouse. Speakers, on the other hand, work hand-in-hand with the sound card and so with the camera. Other computer accessories are: printers, scanners, keyboard, dust covers, etc