I've been trying to work out a solar garden light conversion. Thought it would make cool lightning effect, if I could hook up the flash circuit from a disposable camera. Got the flash circuit to work as a strobe, the solar charging is a simple diode, but the switching on at night is a problem. The strobe draws about 800 mAs starting out, but tapers off to about 26 mA when it flashes. A single AA isn't going to last long, hopefully an hour or two. The LED circuit from the garden light is low current, can't handle 800 mA, a relay would be wasteful, not to mention rare for 1.2 volts. Thought about disabling the oscillator in the the flash boost circuit, but don't know enough about it. Think three or four of these strobes in the yard would give a great lightning effect, since they would be naturally out of sync, and charge at different rates.