After a really really nice fellow motorists “accidentally” tried to almost “accidentally” run me over on my bike, again I’m sure it was an accident ALL 3 TIMES, I decided to install a camera on my bike. I made a 3D printed mount that bolts on to my engine cowl bolts. I mount a GoPro Session cube camera there (its heavy for its size). I printed in ABS with 90% infill and it’s rock solid.
So you can make usable parts with a printer with the right materials, design, settings. My turn signals are also mounted on 3D printed standoffs, and my old bike I 3D printed complete turn signal strips.