1) MP3 Player: I think this tool has changed the way we listen to music.
2) Memory card: This tool has allowed us to easily transfer large amounts of data.
3) Computer: This is one of the greatest inventions in the history of humanity.
4) Digital camera: this tool has made it easier and more accessible to take pictures.
5) Microwave oven: this invention has made cooking faster and easier.
6) Satellite dish: This invention has made it easier to get to know other parts of the world and other cultures.