Normally we have just two choices of screw and screw driver to choose from when fixing or building something at home. It also usually works out that you nearly always find that the screw driver and screws that you need never seem to match either. So just to confuse things and at the same time add a little of style with a smile, the Japanese design firm Studio Yumakano have come up with this interesting design where screw heads have a smiley face and the screw driver has the same but in the opposite.
The result is that you end up with screws that are fairly safe because not many people will have a smiley screw driver and they look really cool too no matter where they are used or what they are used to hold up.
Source: Studio Yumakano