@threat These are called pop sockets I think. No, I also didn't know they have a name for that until like two months ago 😄 I think it's just a fun accessory like spinners of the past, or those nipple grids. Not something useful in utilitarian sense.
@m0xee thanks. i thought it was recliner for your hand holding handset all day. my fidget spinner is usb drive. roll it through my fingers like coin trick 17hrs/day.