Turn Off Unused Devices
In theory, hardware with no moving parts should last forever, and it sure looks like most electronic devices don’t have any moving parts—but what you can’t see are the electrons moving down the wires at 60% or more the speed of light.
In some places, the electrons need to cross a small gap. In these places, the electrons will sometimes pick up a tiny bit of metal from one side of the gap and deposit it on the other side of the gap. As time goes on, there is less and less metal at the starting side of the gap, until there is too little metal for the electrons to use—at that point your device just stops working. (You may get flickering for a few weeks beforehand.)
Some electricity needs to travel through electronics for as long as they are turned on, and the longer they are turned on, the sooner they will fail. You can add years of use to a device’s life just by turning it off when you aren’t using it.