DYS 2225 Brushless Motor Holder
Just a little holder for DYS 2225 brushless motors (could be compatible with other similar motors).
Mount the motor to it then glue it onto a board of any material, then fix that board to your work surface. You can also hold it in your hand.
WARNING:
Never hold it in your hand when spinning a propeller with it, because it might slip and cause injury.