Topfire helmet lights
Busch and Muller's Topfire helmet lightsare a really neat way to get yourself a bit of extra visibility on the bike. They're easy to fit, effective and weigh next to nothing.
The kit contains four single red LEDs connected to a battery compartment housing a cheap-to-replace 2032 button cell. The LEDs sit in the rear vents of your lid, held in place by double sided sticky tape, and the battery clips to a strap or, in my case, the centre strut of the rear retention system.