Did a little research on the net/youtube yesterday. I was actually looking for something else but came upon a DIY conversion by accident. It was where folks were taking a 3mm or 5mm LED (purchased for next to nothing), trimming the leads down and replacing the normal bulb in things like mini maglites. It seemed to work, but I've not done it and don't know if there are cons to doing it. I don't know how bright it would be or if it is really worth doing. It looked simple enough and was cheaper than buying a conversion kit by far. Anyone do this? If so, is it really that easy? And how did it work (brightness, battery life) etc? Thanks.