I use candles when the electricity is not available
"Be successful! I judge men only by the results of their actions."
colord led lamps that clip onto stuff and clip it onto your hat or back pack if you where it when your bombing work great the color makes it less obvius.. but i usually use a big as mag light and if its a sketchy spot throw a couple white socks over the light part to defuse the light and make it softer.. or if you got cash to blow go on a cinematography website like B&H photo/video and get a backround flood light.. make sure it says SOFT and FLOOD not spot lights
The moon is a good option.