When I got back from Brunei, there was a notice from DHL saying a parcel delivery had been attempted but no one was home. I wasn't expecting a parcel while I was away.
The notice had a waybill number so I entered that in on the DHL website and, while it didn't give me the sender, it did give me the city of origin: Redwood City, CA.
I hadn't ordered anything from a company in Redwood City.
So I rang DHL. The package was from Google.
I went and picked it up from the depot and it was a Summer of Code t-shirt to thank me for my participation this year as a mentor.
Cool that it arrived in time for summer here :-)