For me, the more useful electrical equipment are:
the remote control, because you can be sitting in the sofa watching TV and you can change and choose the right channel without getting up.
the microwave oven is very useful too, because you can heater the food in the same dish you are going to use for eating. You don't need to dirty anything else, only your dish.
the washing machine is very useful because I to wash with out a machine is very hard.
TV is also very important, you can have a goog time if you choose a good program.