Inspired by Myke Hurley I decided to add a clip to my Apple Pencil as I was getting fed up of losing it around the house or in my bag.
The one that Myke suggested was the Fisher Space Pen Clip. I went ahead and ordered one from Amazon.
When I first got it through it slipped onto the pencil fine but wouldn't stay in place. If yours does the same get a pliers and squeeze the sides together. Do it in small increments to make sure you get a tight fit. Mine was a bit tight to get on but now it's in place it's rock solid.
I now never lose my pencil as it's always attached to my Smart Cover when I'm not using it.