In the episode that Barry is introduced (6?), Winry is shown brought in with her hands chained together and she stands by a table. Ed tries to get her free to no avail and you can clearly see that she's just a bit taller than him, meaning she's got her feet on the ground (plus, there's nothing else right next to them).
However, in a later scene, she's shown losing her balance on a smaller stool/endtable of some sort. Where did this object of elevation come from? =/
Yes, I need sleep.