Bed-side Lighting

About three years ago I bought a couple of bed-side lights. Today I finally got round to buying an extension cable so that the second one could be plugged in. Shame really, as I had a contingency plan that when the bulb expired in the first one I could just switch-a-roo the whole lights and prevent having to find a new bulb from some shop somewhere. Another fine plan messed up by common sense.