+1000 sats. It's important to have a place to pickup mail, especially if you can't receive mail at your home or work address and if general delivery/PO boxes require government ID. A mail forwarding service can provide privacy, but if you don't have a place to physically receive the mail (last-mile), it can't help.
A network of KYC-free PO boxes, package pickup stores or parcel lockers could solve this: https://anarkiocrypto.medium.com/second-realm-ideas-caebc787d791 As you describe, the business would advertise their services as a PO box location and set a fee, the customer would send the package to this address (with a pseudonym or include their email/phone number in the address) and the business would hand over the package on confirmation of the pseudonym or a PIN sent by email/SMS + payment of the fee.
In some countries, there are already KYC-free PO box services that only require a phone number, no government ID. Similar to DHL lockers or UPS Stores. But these are restricted to specific couriers and may only accept national packages (no letters or international mail).
A taxi service could help, but you would still need to address the package somewhere. If it's general delivery, the post office may require government ID that corresponds to the name on the package. Unless you talk with the taxi driver in advance and they provide the shipping address?