These badges are done on a CNC mill in aluminium, but i guess they could be 3D printed in plastic too, just wouldn't look as good
They can be sent any way you wish dude
I think they're a great idea, they'd be a nice addition to the kits.
Like the way Dynojet, HKS, etc give you decals with their stuff so you can stick it on your car/bike etc. Free advertisement too