Install a second horn in cars. The original horn would be used for hazard warnings or to communicate anger or outrage. This would have a typically harsh sound. The second horn would be for thanking people, or saying goodbye when pulling away from friends. This horn would have a happier, more comic tone and be accordingly visually represented on the dashboard. A few road rage incidents may be avoided if drivers could differentiate more clearly between annoyance and gratefulness. A range of...

Invent a holder for bathroom products, such as shampoo, shower gel and conditioner that would gently warm them up, thereby avoiding these chilly blobs of cleansing fluids interrupting a nice warm shower.

How about a digital tie where you can change the color and pattern to match your suit.

I think that they should make a new type of Ebay - a person who is looking to buy a certain type of item can post it in his listing and the sellers can bid for his business. The seller who has the lowest price will get the business. Isn't that cool?

Design milk cartons which have a litmus strip that changes color depending on the freshness of the milk. A face could be printed over the strip - turning green when the milk is spoiled.

Design mirrored nail polish or clip-on nails such that the wearer can check their face discreetly and at any time.

Design cigarettes with strikable tips. The cigarette packet would have an abrasive surface on one of the box faces against which the cigarette would be struck, negating the need for a match or lighter.

Redesign ice-cream cones to have a channel leading to a reservoir at the base which would collect any drips.

I think somone should create clothing that can detect the surrounding temperature and adjust a heating system or cooling system appropriately... wouldn't that be a dream!

We all know how embarassing an open fly can be. Why not create some type of sensor that senses if your zipper is open and it can sound some sort of an alarm so you can quickly close it before somone else has to be the one to tell you