REMEMBER THESE?… NO MATTER  WHAT THEIR MANUFACTURERS LABELED THEM AS (I.E. KLICK-KLACK BALLS, CLACKER BALLS OR JUST PLAIN CLACKERS), WE OFTEN CALLED THEM CRACKER BALLS. THEY WERE HEAVY GLASS BALLS THAT YOU ENDED UP CRACKING YOURSELF ON THE WRISTS OR THE HEAD WITH.  OUCH!  AND THEY CAME IN HANDY AS BROTHER-BEATERS.  😉  HONESTLY, THEY WERE GREAT STRESS RELIEVERS AND I’VE BEEN THINKING ABOUT GETTING A PAIR FROM EBAY OR AMAZON TO HELP RELIEVE STRESS. I ALSO THOUGHT THEY MIGHT COME IN HANDY AS AN AID TO FOCUS ON MY WRITING…WHEN TOYING WITH IDEAS.