This is just to prove to Tom that I can (and do) do some horrible work too!
This was a nightlight I was given some time ago. It used to have a little 4" or 6" fluro tube in it, but it was wired in some oddball horrible way that sort of used it like a cold-cathode tube. Never worked very well.
It had been in operation for about a week recently for an unwell pet. Yesterday morning it was dark...
Tube was all black and honestly, I couldn't see the future in replacing it. Instead, I grabbed some 10mm white LEDs, ripped out the old innards of this thing, soldered the LEDs in a direct two series pairs of back-to-back diodes, put a 1K resistor in series and an 0.1uF capacitor across the 240V AC...
The old one used to draw about 4 watts. The new one - apart from looking a bit ugly (4 bright spots instead of a large, evenly illuminated panel), and being slightly dimmer - barely registers on my meter, showing a powerfactor of around 0.03 and a power draw of between 0 and 0.2 watts.