Any machine I see in the
Doraemon comics/cartoons:
"Anki Pan" Memory bread A bread used to imprint pages, which after ingestion, will imbue the consumer with the content imprinted on the bread.
"Computer Pen" When put to paper, it automatically does all the work, whether it be for a job or school.
"Abekobe Cream" Upon use, the colder the surroundings of the user, the hotter they get, and vice-versa.
"Usotsuki" When the user wears this over their mouth, people will believe every lie they tell.
"Instant Construction Camera" and "Gulliver Tunnel" The ICC takes pictures of buildings and produces miniature versions of them (complete with minis of whatever was inside, except for living things), and walking through the GT will make you small enough to walk into the mini buildings.