On some occasions light switches and plugs are difficult to reach/use, below are a few examples of things which can help to make it easier to use these:
Sometimes light switches are out of reach, people with dwarfism often find unique ways to reach the switches to turn on lights, one example is the hook on a stick. However sometimes, reaching is not always possible and for ease, light switches have to be lowered.
On some occasions lamps needed to be adapted too, to allow them to be switched on and off easily, foot switches can be used for this purpose.
Sometimes plugs are difficult to grip, these plug in mates are a great way to adapt the plug for if someone with dwarfism has little grip, or arthritis.