Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:6176869.

ADXL345 X-Axis mount for the Kobra Neo

There's another mount by Applepie2 but it doesn't fit the accelerometer I have which I think seems more commonly available (e.g. https://www.amazon.co.uk/dp/B09M6MSF7J)..

There are screw mounts for the board, but the fit is tight so that friction fit is plenty solid enough (maybe sand the edges of your board down if it's too tight).

Designed with a kind of hook to grip the top screw head, then only the single screw below is needed to attach it to the printhead.

More info on measuring resonances here: https://www.klipper3d.org/Measuring_Resonances.html