What are some cool simple never made inventions that could be made over the summer?

Question

I'm bored this summer, need something to do...any ideas?

Answer 1

Really Useful Gadgets

  

We live in a rapidly changing world where we are continually subjected to the latest  fads in gadgetry. At work and at home we suffer from the constant change in technology. Often we feel as if our life is incomplete unless we have the very latest innovation in computer, television, mobile phones, scooters – yet all of these devices are totally useless adding nothing to the quality of our lives. Thankfully there have been some worthwhile inventions which are able to make life so much more enjoyable. Here are the best of these inventions.

Here is the website,

http://www.weird-websites.com/justweird/...

Answer 2

An effective form of magnetic propulsion.

Harness the wind moving tree brances to collect energy.

Answer 3

Refrigerated underpants.

Jet powered all terrain board.

Politician with common sense and decency.

Answer 4

How about curing cancer?

Answer 5

Invent a hybrid grass that grows thick to 3" and then stays green all summer and doesn't grow any taller. In the fall it is cut to 2-1/2" and goes dormant, then comes back in the spring to grow to 3" again.

This shouldn't take more than 2 months and you'll still have time to go to the pool in August.

Enjoy your summer, oh and I get 10% for the GREAT idea.

Answer 6

You could make a hyperstereographic nephiscope. I don't think one has ever been made. I started to make one last autumn but didn't finish it, so yours could be the first.

You need some Al tubing and optical quality mirrors.

Answer 7

You probably won't find something that no one has made, but if you think about it you can figure out ways to make your house more energy efficient, for example with passive solar.  

If you need some ideas, look at the Mother Earth News.  That magazine is probably in your local library.