i use my address and real name so i don't know about finding a drop address. i thought about using a house on my street that no one lived in that still received mail before but i never ended up using that as a drop. i did walk over to the house and checked the mail box to see mail piling up that the landlord never checked.
you should already have a stream of mail coming to any name/address combo you plan on using to receive packs. whether there's an actual name on the mailbox doesn't really matter, though it couldn't hurt i guess