If you need a Bar Mitzvah gift and don’t just want to give a check, how about chipping in with some of your friends for this Gear Ring ($165) by Kinekt Design.
It’s made from high quality matte stainless steel and has six micro-precise gears that will turn in unison when the outer rims are spun. This makes for an easy and smooth feeling as you twist the ring. They have sizes 5 through 13 which are standard US ring sizing. There is no difference between male and female sizing and they have had purchases from both genders. We agree… why should the boys have all the fun!
Check out this video to see the ring in action!