This technique also works well with summoning dolls, though they can not hold unique, set or quest items (in the act that they are found).
I've also used a summoning doll at one location to open a container, so I could drag and drop items from my hero and DK's inventories from a fair distance away.
Another issue with using the teleporter stones for transferring loot is that they are only available in acts 2 and 3.
