Universal Silicone Pen Holder for Apple Pencil 1/2 Non-slip Sheath Protective Adjustable Case Tablet Computer Accessories

It’s a bit too thick (personal preference) and it doesn’t fit the case, but in general it’s quite nice.

You are not able to charge the Apple pen when the cover is on .. other then that it’s a good thing

Doesn't slide on very easily but stays in place once it's on

As in description and pictures