The main light in our bathroom also operates a very noisy extractor fan. That runs for over ten minutes once activated, and can be very intrusive at night. So we had a motion-acitvated night light that provided sufficient illumination to use the toilet in the dark, but it was very easily activated just by walking past, and used the batteries up very quickly.
Then Julie spotted one of these for sale.
(They are very inexpensive)
Just put in two small batteries, and it is ready to go. It doesn’t get touched by any water during a flush, so is completely safe.
So we now have a ‘Dico light’ effect inside our toilet, albeit a very sedate disco.
(It looks a lot more colourful in real life)