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What are some good inventions?

I have to do a project for one of my classes and its to create an invention and build it. Like i have to come up with a new one and i dont know what to do! Help!

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If you need to come up with a new invention for a class project, then think about making something you would really like to have--no matter how silly it may seem. Then figure out a way to make a prototype--that is, it does not have to look good and may not even completely work--just enough for people to see how it WOULD work with the proper manufacturing. Think about games you play, sports you play, activities you do every day for inspiration. An example would be the person who invented the alarm clock that runs (or rolls?) away from you, so that you have to actually get up out of bed to turn it off. Good luck!

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The iPhone and Apple products like the Mac and iPod are good inventions. Invention of electricity is one of the most important inventions of our time. You can go to http://www.time.com/time/magazine/article/0,9171,2099708,00.html, http://inventors.about.com/od/timelines/a/twentieth.htm and http://inventors.about.com/od/lessonplanskidinventors/a/inventions.htm for more information.

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what grade are we talking here? i mean how old are you?

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9th...
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so... what about a mousetrap... for whatever reason that one pops into my head alot. It could be dangerous to attempt so i wanted to ask how old you were first.

Ill keep thinking and post if i come up with anything better.
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lightbulb. haha
<3Em

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The simplest invention to copy is probably the handheld egg beater. I may not be very complex, but all you need is some wire. I'm sorry if it doesn't help.

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There are many good inventions, you can't just limit them, but still there are many good inventions have come up in medicine, and health care. .CT SCAN, MRI, MAMMOGRAPHY, then insulin in tablet form, as it was very painful for a diabetes patient to prick needle for every dose. Food preservation, eradication of many many dangerous diseases like leprosy, tuberculosis, yellow fewer. Modes of transport like planes, jet, railway cars etc.

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