To make ovens where the temperature numbers next to the the dials dont wear off after about 6 months
To make all tablets that have to be given to cats, palatable to all cats, even the fussy ones.
To make cars that have automatic/compulsory indicators when turning in car parks (yes we would like to know if you are planning to turn, and in which direction, not all of us are psychic) 
Girls grammars in the 60s (and beyond)
Favourite small treat when feeling blue or conversely a bit flush




) So many corners and bits that you just cannot get in to clean properly, Drives me nuts!
) without the tab detaching & having to resort to a knife.