Yves Behar is by fare one of the smartest designer living on this melting planet. Smart people know how to play as kids. I think design is at its best when its playful and with Y Water he did exactly that, a bottle to play with. With One Laptop per Child (se picture) he showed the rest of the world the future of how to connect the world with smart design. His company Fuse Project have a blog, check it out (playful inspiration).