Earlier today, Nintendo announced a new set of My Nintendo reward missions on the E3 games website, and now hidden missions are beginning to surface too.
If you scroll toward the bottom of the Nintendo E3 games homepage, you’ll see an image of the treehouse. If you point your cursor over the treehouse a Mii will appear – click the Mii to earn 10 points. Make sure you are signed in before doing so or it will prompt you to log in after clicking.
Thanks, ncfoxblog

Thanks but where is the eye?
All the way down on the Zelda game page.
I’m still looking for the z icon
Go to the Videos page, click on the Breath of the Wild video.
Look directly under video where the Pause button would be.
The Z is under the Breath of the Wild trailer in the Videos section
i’m checking right now.
On the mobile site it jumps all over the page… BUT I GOT IT, THE BITCH