None because There is A Light That Never Goes Out.
None. The mods do that for her.
Just two, but you're going to need a lot of patience and light bulbs.
It has a dark side, a light side, and it holds the universe together.
An electric elephant!
Both should be changed regularly, and both for the same reason.
None. Mice can't change light-bulbs as they are mere rodents without the physical or mental ability to do so. Not to mention it's much safer for them to pilfer food in the dark.
