I've just recently moved to Germany and got the first Threadless order shipped to my new address. I didn't know that you have to sign and pay the postman a German Import Tax on goods ordered from overseas - which sucks, but anyway -
On the day that my order came, I was out. When I returned home, I found my delivery on my front step already signed for, and someone had paid the €6.60 Import Tax for me. I called around to the neighbours, but they knew nothing about it.
The next day I got a note in mailbox that said: I hope you enjoy the new tees.
I still have no idea who it was, but thanks, Mystery German Threadless Fan.