Antivibration dampers for mostly applied stepper motors are available. These energy- absorbing rubber mounts with a metal mounting face in sizes of Nema17 and Nema23 are in stock.
Stepper motors are affected by resonance. Resonance is caused by parts vibrating in concert with each other, which can be lessened by fitting a stepper motor antivibration damper.
Note: these products are slightly oily and have a yellow shade (which is normal)