The following is my boiler plate for anything that requires anonymous subscription - 23andme, domain registration, hosting, etc:

1) Mailbox in SF's China Town (a number don't ask for ID even though they're supposed to legally request it). Many also don't speak much English so if anyone comes to investigate good luck to them.

2) Visa/Amex gift card purchased at Walgreens/Safeway in cash - ideally in a different city you happen to be visiting with no connection in. Las Vegas and New York are great choices.

3) Email address created and accessed via TOR within the incognito mode of the browser. Buy the 23andMe subscription/domain/hosting in the same way but making sure you are using a different TOR session.