Xatokar
The package is part of the random Rybambel package gifts. The package will wait for you , and be there when you buy an apartment. What is inside is probably a miniature collectors item. See ryzom wiki for more info.
Players right click an apartment caretaker, select info, and the click retrieve to get a package to deliver somewhere.
Delivery people get no prizes or any compensation for the costs of TPing to the 4 cap cities.
I had no idea! Thank you Xatokar. :)