I just wish that a manufacturer of disposable razors would have 20 or so small plastic webs on the side of the handle that one can nick out a web with your finger nail after each use so that you know how many shaves you have had with that razor.
Why does not a toothpaste manufacturer put zip locks internally in the plastic tube so that as the contents are used up and the paste is squeezed towards the top, you can clip a zip lock closed so that the paste does not squeeze back down to the base of the tube
Why has not a soap manufacturer placed a small polystyrene insert, the size of the piece of soap that is normally discarded, inside a bar of soap so that only a small piece of polystyrene is discarded when the bar is finished. This insert could also be used for competition prizes as one would have to use up the bar to see if you have won or not. One other property of the soap bar would be that in a bath, you would not spend minutes looking for the soap bar as it would float to the surface.