Satisfying pen holder

I wanted to make a pen holder to hold the pen that I use so I came up with this, it makes a satisfying click if you use a pen that has a 10-11mm diameter. I would HIGHLY recommend that you use some sort of adhesion to hold this pen holder, it is very light and will not work well without some sort of adhesion, things like tape, double-sided tape, and sticky dots work very well.