OK, Now that you've had a good laugh from my previous post. Here's a serious invention.
It's a digital tape measure! Fabulous! Before you math geeks roll your eyes at me, remember that inventing items for the masses means inventing things that make life easier for the public - people not as great at math as you are. This little baby even records measurements for you so you don't have to take notes (frees up a builders hands not carrying pencil and paper). This sells for about $25 online.
Every so often, a brand new idea knocks my socks off, but like I've said before it's these types of improvements on existing products that really sell. Plus, I think it's easier to market and sell these improvements to retailers than an untested idea. If you do want to go way outside the box, start with a virtual prototype to help others see your vision.
Have an awesome weekend! Danni.