Guitar Strap Lock/ Stand

Hi, this is my third instructable. I was using my guitar stand and I realized that the guitar might slip on my floor. My inspiration for this came from seeing a cello player using device to have grip on a marble floor. So here I am going to build a stupidly simple device that will keep the guitar from slipping on the floor, reduce the shock over the strap pin when I put it down, and also work as strap lock.

Nothing more than a bottle cap, a blade and a hot glue gun.

Cut the cap like in the picture.

Put glue gun on the side to add more grip.

Simple but effective. My guitar doesn't slip any more on the floor. This is my second stupidly simple instructable. I hope that I will come out with a better thing soon.