Pianos are famously bulky instruments, and a real pain to move easily. Not so with this flat-pack piano, however. It folds up flat.
This piano, designed by Yun Jin-Yeong and Jeong Seong-Hu, takes its cues from Ikea, allowing itself to be folded up and packed away. It folds down totally flat, letting you not only move it easily, but store it as well. Of course, it's a digital piano, not a real-deal grand piano, but if you can afford a grand piano you can probably afford to pay people to move it for you.
It folds like so: