There seems to be a current craze for the spinners. They don't do much for me but I remember and am often reminded that when I was 3 to 5 years old (late 1950s) I was constantly dissembling everything. My favorite was the chrome tubular kitchen furniture that was so popular of that era. The tables and chairs were all put together by machine screws and wing bolts. My mom was baffled that the nuts were always coming loose. After months of this mystery I was caught red handed, gleefully under the tables spinning those nuts loose. I was famous for taking everything apart, my excuse was that I was curious about how so many things worked. Back then I could not reasemble the stuff I took apart. My dad would scream " distruction, distruction, dis-gd- struction." Fast forward a few years and I became quite sucessful servicing and repairing all types of stuff. I excelled in Bio/Mechanical equipment.