Right-angle mounting bracket for 28BYJ-48 (small 5V geared stepper) using M3 hardware. Version 1 has a smaller hole for the shaft, and is simpler to print, without countersunk holes for the M3 screws holding the motor.  Version 2 has more shaft clearance for a particular timing belt pulley I'm using, and also makes the front surface flush. I think V2 is better, if your printer can manage the overhang caused by the countersunk holes. V3 adds a side bracket for more mounting options, and V4 has a front bracket (counter the forward-tipping force when the pulley belt exits down).SCAD files are provided, so you can adjust to suit.