Better Spray Bottles

Most spray bottles have a wide base which allows you to set them down easily without tipping over. However, this can make it difficult to use all of the fluid in the bottle. You get down to the last inch or so of fluid, and if you tilt the bottle the wrong way, you get nothing. Spray bottles should have a conical bottom so the last little bit of fluid gets funnelled to the suction pipe. As long as there is more than a milliliter in the bottle, you will get spray. When you you get no more spray, the bottle is empty. No more fooling around with half empty bottle. Of course you will some kind of base to support the bottle when you set it down. I'm thinking that the extra cost of special base might be more than the cost of the extra fluid, but maybe not. Plastic is pretty cheap.

Somebody else had a similar idea. They even went to the trouble to make one.

Update December 2016 replaced image. This may be the only copy of the image in existence. I originally got it from Makezine.com, but that story has vanished.