The sink drain stopper decorative cap may couple to the top of a drain stopper in a sink. The embellishment may enhance the appearance and/or supplement the function of the drain stopper. A decorative embellishment may be a 3-dimensional adornment. The decorative embellishment may be visible within the sink and may improve the appearance of the sink by adding a decorative element to the sink. A functional embellishment may be a battery operated device that provides a useful sink function. As non-limiting examples, useful sink functions may comprise indicating the date and/or time, providing illumination, timing an interval, playing music, projecting an image, monitoring the temperature of the water coming from the faucet, or combinations thereof.