10 metres of auto electrical cable, so that I can re-build the wiring loom of the Orange Bling.
I leave the colour of said wire as a puzzle for the reader.
After the pedestrian muppetry of the riverside path I use on my way home from work, I may fit a 12V Car Horn. After all, I've got a push-button switch waiting to be wired in, and a 12V battery. And a horn waiting in the cupboard. Just got to be a bit careful with Earth - when the lights are on, the frame is at 6V! (Or, to be more accurate, the battery is at +/- 6V with respect to the frame.)