Re: a horn (if you already have a battery for lights)
At my local bike shops they have these air horns that mounts on the handle bars and has an air tube going to an air bottle held by the water bottle cage. You can refill the air bottle and get many many uses with a full charge. It is LOUD to.
Found it here, - Midtown Bike Company - Memphis, TN
"I would rather be exposed to the inconveniences attending too much liberty than to those attending too small a degree of it." - Thomas Jefferson
Last edited by NunyaBidness; 03-04-2009 at 12:23 AM.
Reason: edit to add link