Pilot lights
When I was a kid, if I got out of bed at night for any reason, the house with its holland blinds firmly pulled, was black end eerie.
How different these days. Almost every room is aglow with tiny lights of different hues.
From my bed I can read the time in red on the clock radio and see another small red glow at the base of the telephone. The hall has a soft amber night-light at floor level to guide wanderers back and forth without mishap and another red light on the hall telephone. There is a welcome in the living room from a red spot on the television and a blue one on the VCR - and there are often banks of others as well if the various tuners and amplifiers happen to be left on.
The kitchen is positively cheery with time clocks on the oven and microwave (in chartreuse and green) a green light on the cold-water dispenser, a bright blue one on the vacuum cleaner charger and no less than three red lights to indicate that the dishwasher has completed its cycle. There is a green light in the laundry on the freezer and a red one in the bathroom from my husband's rechargeable shaver.
The study can look like Luna Park with yet another red telephone light and various red and green lights on computers, monitors, printers and speakers. My husband's mouse has a single green slit eye like a cat's, while mine glows red from underneath like a space ship.
I think I once saw a calculation of the amount of power that lights such as these consume in a year. I don't begrudge the cost a bit - I love them. They're comforting and reassuring when you find yourself up alone on a dark night.
House construction styles these days make houses naturally lighter at night. There are larger windows and numerous glass exterior doors. From our kitchen door there is often a dancing light show of the moon playing on the rippled surface of the pool, while on true moonlit nights there will be a mystical clear white glow flooding down from the dome-shaped skylights in the ceiling.
So, excepting during a power failure on a black night, there's no such thing as being all alone in the dark any more!

Meet Kez and Tigger. I don't know them personally, but they are sporting identities of note in the local region where I live. They are pictured here sitting on cases of beer in the coolroom of the bottle-shop I frequent when replenishing my liquor supplies. 