I just received my Bambu Labs A1 and printed the well designed Bambu Labs AMS Lite mount that mounts the AMS on the top cross bar. Although I did not see any impact on the prints so far, I was not happy with the amount of movement it induced, so I designed a mount to put the AMS Lite vertically on a nearby Pegboard. To ensure that the mount stays firmly on the pegboard I used automotive retainer clips that are normally used to hold trim in place. This is a link to the ones I used https://a.co/d/3qR35pW.
The mount is designed for a pegboard with approx 6mm holes spaces 25mm apart. I used the same mounting screws that come with the AMS Lite that are used to mount to the stand.