When I ride my motorcycle to work, I need to fumble with my badge while at the same time ride through the security gate, most times with other vehicles in front and behind me.
I got tired of this and thought that it would be safer for all if I could mount my badge (already contained in the badge holder here https://www.thingiverse.com/thing:867049 by jrebeiro) somewhere on my motorcycle so that it would be easily viewed by the security guards.
I also wanted to be able to easily keep it handy enough that I could quickly take it out and scan it if necessary. Thus, the design was found for the left-side mirror mount. I'm sure this could be made for other sizes of mirrors if need be. I also opened up a hole in the bottom of the card slot so that water wouldn't collect.
No, I don't work for KwikFill, but I wanted to show w/o showing where I work :)
I did print this with the badge holder down and with limited supports, so that there wouldn't need to be too much to cut away in the end.