Thing well made: guided shaft for keyhole
Nice idea for those who are tired of wasting precious seconds missing the keyhole when you put your keys on it.

Via Everyday UX
But is it?
The only issue I see is that it not only guides your key tip but dust and dirt as well. Oh, also it requires a custom key format because of the additional length required to reach the tumbler.
The bigger opportunity: retrofit existing locks?
I wonder whether someone could design a cover for existing locks?
