10. The Smellmaster 9000
Richie Rich, (1994)
A rich, eccentric billionaire has a personal scientist (don't you have one of those?) who invents a nose-shaped gadget that can sniff and identify whatever substance it's pointed at. But sadly for his son, McCauley Culkin, money and nose-themed machinery still can't buy him friendship.
What you'd use it for today: Figuring out if the milk's actually gone bad, calling out your roommate for "borrowing" your weed.