Questions with the keyword 'invention'

• What was your first invention/creation? by I Love Brownies to Huw, Gosha, Stacey, Steve Comments: (No comments so far )
• A an engineer, which of your own inventions/creations are you most proud of and why? by I Love Brownies to Huw, Gosha, Ray, Stacey, Steve Comments: (So far, one comment )
• What, in your opinion, is the greatest invention ever? by emma88762 to Huw, Gosha, Ray, Stacey, Steve Comments: (No comments so far )