I can't help feeling that maybe there are better uses for several hundred quids worth of digital camera, but I have found it invaluable when doing DIY on the house. I'm good at taking things apart, convinced that I can remember how to reassemble them later. At the weekend I took pictures of all the wiring I was about to undo, feed through holes in the ceiling and put back together and it saved me from hours of my usual problems.

Of course in the old days they used paper and pencil...