Lights

For open, unlit roads there are some amazing small torches available for cheap. Alongside a Cateye Singleshot I've used 2 of these tiny CREE things for riding down gorges in pooring rain. Usually using 2 of these on 'normal' is way more light than needed for regular conditions.
230 lumens for $17!

The same website sells the mounts needed to mount one on the handlebar. For fitting one to my helmet I use a mount designed for fitting torches to gun-sights, they sell that too.

You need one of these batteries to run one torch at the full 230 lumens for about 4 hours, or on 'normal' (about as bright as a Hope Vision 1) for about 8 hours. The charger's cheap too.

The torches themselves are tough but I've managed to get one of them to develop an occasional flicker after getting it soaked for 5 hours. I should have done something with the seals? KY jelly?

:o

I ordered two of these torches, plus the batteries and charger from DE. Delivery took 15 days, and the price including postage from Hong Kong was £30.27 ($50). I also bought two lockblock mounts from eBay for £5.50 each, so total price for the rig (2 x 230 lumens) came to £41.27.

I've just put the batteries in and tried one of the torches. I pointed it down at my desk (dull beige plastic, not shiny) close to the surface, and the reflected light alone was enough to make me see stars for 2 or 3 mins. Test ride with them tonight...