Questions with the keyword 'invention'

• What do you think is the most influential invention for the human world by #Harry Potter??? and 1 other. to Annette, Dave, Jaine, Julio, Mike Comments: (so far, 2s comments )
• Are any of your inventions used in modern day society?! by EamonnM to Mike, Julio, Jaine, Dave, Annette Comments: (So far, one comment )
• What do you think is the most influential invention for the human world ? by DavidMul04 to Annette, Dave, Jaine, Julio, Mike Comments: (so far, 2s comments )