What new invention should I invent to make a lot of money?

[shankster]

I need your ideas. If you're too unmotivated to market your invention, or if you don't have as much money as I do to produce it, maybe you can tell me about it. I'll create it, market it, and sell it, and then I'll tell someone years down the road that you gave me the idea on this website. You don't get any money, but you'll get the thrill of knowing that your idea is making me a lot of money.

[Mike1942f]

The idea is easy - making it work is the problem. Picking one to work on is even harder - not 1 in a hundred makes money, much less a lot of money.

[magnetz121]

Make a plasma launcher! It would be soo cool if you could get around the whole dissapating in the atmosphere thing, maybe you could design it for use in space.

Or you could make a subspace generator that alters the laws of physics within a certain confined space (this could fix the plasma launcher).

Or you could create a form of life that doesn't use proteins but instead uses silicon and phosphorous as its biomatter.

think about it!

[charcinders]

A way of storing solar heat directly by transferring the low grade heat from the roof of a house into a high temperature pile of refractory blocks in an insulated vessel under the house or garden, where it can be stored until winter, then used to heat the house.

Off you go...

[P]

Cold Fusion. Of course it is impossible.

[Just another dude]

An anti-taser shirt.

Or a shirt that you can connect peripherals to so they can communicate on a common bus e.g. your mobile phone can talk to your hat which has a camera on it and uses facial recognition to determine if you've seen a person before. If you've previously registered that you don't like that person then your phone could automatically ring so you don't have to talk to them. Also that hat could live feed to twitter / facebook to update your status on who you just blanked and automatically block them.

Then stats could be generated on the city's most disliked person.

Or if you think all that's a stupid idea then just take an existing idea an do it better / cheaper.