If you like the holder you have and leave it in all the time, put bits of butyl rubber around it. A tiny bit goes along way and can also fix leaks, rattles, house ductwork leaks, gutter leaks etc and is totally removable anytime. Here’s a roll for 14 bucksLooks like it is available for purchase now. I am interested but don't want to be a guinea pig. I have a phone holder from Etsy that goes in the fits cubby but it is too loose. Maybe I am too picky
Sponsored