I got tired of bootlegging things together to mount my ADXL to for my Y axis so I put together this little mount that goes with the Classic Ender 3 Bed Handle and the M4 Knurled Nylock Bed Leveling Knob for Ender 3.

I strongly suggest you put some double sided tape under it OR just put a couple drops of super glue under it to stop any lateral movement. The tolerances are fine but everyone's printers are different and I felt making it super tight might make it hard for others to install. It works as advertised, however and you can theoretically perma-mount an ADXL on your bed. I realize this is a pretty niche problem. You need to be using the bed handle AND a knurled knob. The stock Ender 3 bed level wheels will not work. They're too wide.