ADXL345 (generic) Y axis potential solution (Patreon)

Just an idea, open to any suggestions.

Secure the adxl to this with M3x4 screws, place the screws and put a little pressure as you screw in until the screw grabs the plastic, then you'll be able to get it tight.
edit: added a version with threaded screw holes, should make it easier to screw them (edit:tweaked the threaded one)


And then tape down the whole thing to the bed with any type of removable tape, like painters tape or kapton tape.