Here is my drawing for a box to enclose a RAMPS1.4 stepper motor control board. If you don’t have any RAMPS1.4 boards… I guess you won’t be interested. You can cut these at Quelab from 3mm acrylic. Cut one copy as is, another copy without the little access holes for the opposing plates. It is easy to delete items in LaserCut, harder to add them.
You will need to add holes for fans, ventilation and cable routing.