such as from CVS/Walgreen? I guess yea! Any kind of delivery from a business - customer I guess
I was joking about illegal drug delivery. I don't think its legal to send medicine through intermediaries, so I don't actually think it would work for something like CVS/Walgreen.
But besides that, I like the idea of sending physical packets in a P2P network. Think of how torrents work and try to apply that to your business model. (might help)