Got these for Christmas. My wife tracked down everything. What can I say, she's awesome.
That's a Wii U with a Retro NES skin from DecalGirl (the controller looks even sweeter) and a 1 TB external drive built into an original NES TMNT cart from 8BitMemories on Etsy. My Wii U Classic Nintendo gaming setup is now complete. Here's a link to each product's site if you want to do the same to yours:
Retro Skin: http://www.decalgirl.com/skins/147702/Nintendo-Wii-U-Skin-Retro
8BitMemories store (their inventory rotates pretty frequently, but they also take custom orders if you want a certain game): http://www.etsy.com/shop/8BitMemory