latest ghetto-rig, Requires a cat-eye 180 reflector housing and trimming the hook part off a Planet Bike Superflash by a few MM so it will go all the way down the slot. I burned the slot into the top of the reflector with a soldering iron.

I have a fleet of ten bikes, and get tired of fumbling with plastic mounts. This clips right in, put some tape around the clip to increase "friction" so it won't rattle loose. Now it's aimed perfectly also and not covered by your spare . I also had a helmet blinky but it broke. I had a lot of motorists tell me they like the system and I was quite visible. Keep in mind though that stattisically most collisions happen as "left hooks" and cars pulling out from the right, so get a good headlamp, better yet, a bar lamp and a headlamp . I also have pedal reflectors and wheel reflectors, but reflectors can fail, they require the beam hitting at the perfect angle, they are useless in fog, and if the headlight on the vehicle is out or poorly aimed . also how many cars do you see driving without headlights!? I also use a police whistle, has saved my ass many times.