I mixed together an AMS Lite Vertical Mount, Humidity Sensor holder screw for the front and a new customized latch based on the Bambu Labs top mount that allows for another screw to hold it in the rear for extra stability. 

The only screws used in this are two from the bag labeled “For Top Mount Latch” from Bambu Labs AMS Lite Top Mount Screws Kit, all other parts are printed. There is also a hole on the vertical mount that you use to lock in the AMS using a screw already in the AMS.

 You should probably pair this with A1 Anti Vibration Feet Risers or the Bambu Labs Top Mount stabilizer legs to keep better balance when printing. In most cases it doesn't seem to be necessary but does help with the center of gravity.