See the attachment for a cropped (but not zoomed, will have to take more pics if this doesnt make sense) pic.
I made a bracket to hold my license plate and
license plate lights to my battery box from underneath.
I also made two plates to hold
shorty turn signals to the rear peg bosses. Though I wish I got the LED version (particularly after a bulb burnt out).
The license plate bracket is actually bent in reverse of how it is shown so it doesnt get eaten by the tire in a hard bounce. I have a technical drawing in inch units for the license plate bracket (though I don't think i followed it when i made the bracket).