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mobile phone: it is a very good invention because it allows us to remain always locatable, unless there is no signal.
digital camera: this artefact it allows us to record important moments of our lives.
memory card: it is great because in it we can save a lot information and is very small
laptop computer: I like to much the laptop because allows us to take work or entertainment to any place, for example watch movies, listen to music, etc.
remote control: this is fantastic because we can change channel without the need to move.

It's true; the elements you selected are very useful and make life easy. We have coincidences, but while you selected digital camera and remote control I selected washing machine and microwave oven. Really all of these artifacts we selected help us to be well and to have quality of life.