This is a cardboard model of the Wii U GamePad created by Kazuyuki Motoyama, a designer from internet company Hatena.
To show what it could do, you could slide different pieces of paper into the screen. Motoyama admitted that it was a bit shabby but said "We wouldn't know how it felt unless we could actually hold it, but since we didn't have one, the only thing to do was make one. In the middle of the night, I cut pieces of cardboard and glued them together."
Wii U has come on a bit since then hasn't it?