It really depends on the threat model. There are "discreet" remailing services, that promise to only give your information to law enforcement. For example, PO boxes are pretty convenient for US residents. But if they don't want their information in the hands of ANYONE, then I promise you that Amazon lockers are by far the most convenient possible legal solution for US residents to recieve packages without giving an address tied in some way to their identity. I've looked into using hotels, self storage units, and even homeless shelters as places to accept packages without an ID, but I've read the law myself. It is a federal crime to accept someone else's packages without obtaining their ID. The only exception is if the packages aren't sent by USPS or to a USPS addresss, and the only people big enough to create an alternative network are Amazon. Otherwise? You are better off just flying over their yourself.