Taking off your rings to wash your hands is a good thing because the soap will be thoroughly washed away. Otherwise such residue can irritate the skin. Putting your rings on the sink might be a bit dodgy as they could easily fall into the sinkhole. So having a ring holder is definitely an asset. But having a glamorous ring holder is even better especially if you are a jewelry maker!
The instructions on how to make one is by Nash over on Craft a Doodle Doo. Very creative use of a souvenir Eiffel tower on top of a round mirror surrounded with glued on crystals. Wonder what else you can find to substitute an Eiffel tower?