I ran across this neat light while reading Hemmings Sport and Exotic. It is called a "light mine" from the resemblance to the old navy mines. The device is about 9 cm across. The spikes are magnetic and make it easy to place in very odd places. The white LED light seen in the pictures has two brightness settings. There is a red LED opposite the white light, that can be either on or blinking. The the red button, is the on/off/cycle switch. You click and in succession get low white, bright white, steady red, flashing red, then back to off. Made by Striker. Cost about $25 US. Quite handy.