You will need a case to hold all the parts and keep them from being damaged.
You can buy specially formed cases that make it easier to attach to your board, or you can make your own case by using something like tupperware, wooden box or anything you can find. You want the lightest, toughest and most secure though.
Obviously, you are then going to want to attach the case to the board, which can be done any way you like, bolts and/or glue are the most common. You will also need access for the incoming cables from the motor which can be drilled.