I’ve gone all automotive again, but who cares?
Windscreen wipers. Why on earth are we still making these in black metal and black rubber? Metal is hard to see through and very distracting when flashing back and forth across your visual field.
Today’s invention is to make windscreen wipers of transparent stuff. The arm could easily be designed in a perspex material and the blade made in a clear, durable polymer.
This would almost certainly improve road safety in poor weather conditions.