The Wii U GamePad started life as this - CNET

Nintendo has revealed an image of the prototype Wii U GamePad, involving two Wiimotes and some double-sided tape.

List of Wii games with traditional control schemes, Ultimate Pop Culture Wiki

Teased Wii U Mod Switches Things Up by Outputting TV View on GamePad

Wii U Pro Controller revealed by Nintendo

Nintendo Introduces Wii U With Titles, Social Media Features

Nintendo Wii U Review (2012) - IGN

Nintendo unveils new Wii U GamePad - CNET

How to get the Nintendo Switch experience on Wii U

Wii U - Inkipedia, the Splatoon wiki

Nintendo Wii U Cigar Aficionado

Wii U Bricked help - The Independent Video Game Community