Lights

I attached silver baking foil (aluminum foil) to the strap of my bag, and a light just above it.
The foil catches light from car beams, and also provides a much larger "bank" of light, coming from my secondary red binking rear light.

So my 3-light set up is, 1 front, 1 rear (on seatpost), and 1 on my right shoulder (pointing backwards towards traffic).

I've seen the reflection of the large area of red flashing at my shoulder, when passing by shop windows. Pretty good.

I'm going with the tin foil hat...

although the downside is i can't predict whether people will cut me up anymore...