Just a headsup for people who want to register their user ID for the Switch, before all the good ones are taken. When you are doing it you can upload your Mii from the Miitomo app on your phone. So just customize your Mii on your phone and upload it to your Nintendo Account.
Here's my new Nintendo avatar:
Hey! They got SONY on my amiibo! Wait a minute. Two great gaming tastes that game great together!
Switch FC: SW-0398-8858-1969