Hi Shrup here
Theres no need for a vid,
The aim of a spinner is to flick the plug around after its been picked in the wrong direction to unlock a door,
With that in mind you need somthing that will facilitate this,
The simplest cheapest solution is to put your wrench in middle of the keyway and hook an elastic band around the end,
Hold the wrench in place and stretch the elastic band as far as you need in the direction of spin required,
Now let go of the wrench to spin the plug,
You can use varients such as cutting the rubber band and tieing it on the end of the wrench or slotting the wrench handle so the band hooks around it,
It will take some practice but only like the normal spinners do, one or two flips and youve got it sorted,