The Optimus keyboard has hundreds of tiny OLEDs embedded in the keys, making the whole keyboard a sort of dynamic display. You can change what's displayed on the keys, meaning you can switch between keyboard layouts instantly. The Optimus keyboard also lets you display pictures in some apps, instead of using the toolbar, you can press the key on your keyboard!

No word on price yet, but I'd expect this to sell for at least $200 when it's released. The designer's website also has some weird designs, including an arrow shaped mouse which is apparently 'in stores now'.

What is OLED technology?
Optimus keyboard website