I didn't try at the armoury counter, but testing this trick out I did get the summoning doll through a wall. I found packages easier to stack close together than crates or barrels. If you move your mouse slowly, you should be able to get stuff as close as possible to other stuff without having a red x show up (ie move the mouse up until you get an x and then back down slightly, then do the same moving left or right.
The teleporter stones are act specific, and only work in acts 2 and 3.
