Questions with the keyword 'invention'

• is it cool to make so many inventions as you do,is it very hard? by Engineer's let's go! to Pooja, Greg Comments: (No comments so far )
• What was your first invention? by smileyfacegirl1234 to Rumman, Fran Comments: (So far, one comment )
• how do you think your invention can improve the world by alia*cutie pie 3 to Pooja, Petros, Peppe, Greg, Fran Comments: (No comments so far )
• what is your latest invention by jp to Peppe Comments: (No comments so far )