Questions with the keyword 'invention'

• What do you think was the best (and most useful) Invention ever created and has it benefitted you in any way? by anon-206140 to Zoe, Kai, Jose Eliel, Hannah, Hamid, Claire Comments: (No comments so far )
• Have you invented/discovered anything yet? by anon-206165 to Jose Eliel Comments: (No comments so far )