Doraemon has his favourite gadgets include Hopter, anywhere door and time machine. Hopter is a small helicopter placed on the head, allowing them to fly. Anywhere door is a door that can lead to anywhere the user desires. Time machine is the machine that you can travel back through time. All these gadgets are originally brought from department store in the future. Formerly there will be only 1 gadget came out in each chapter, except those that were used oftently. Doraemon’s has 4500 gadgets in total but there are 1963 gadgets that had been used, recorded by Dr. Yokoyama Yasuyuki.