Send physical cookies via API 🍪

An API is something that lets machines communicate with each other. But what about a machine sending a request to a human?

How could an API touch the "real" world rather than the "digital" world? Would this even be desirable? One example is sending a personal gift (i.e. box of cookies, chocolates, flowers), via API.

If you have a list of customers, you could programmatically send them cookies on their 1 year anniversary, as a more personalised way to say "thank you".

Does this exist already? What are other ways that APIs could interact with the physical world?