I remember seeing an NPC move a bed...
With enough strength, you can move and pick up furniture in the game as well. Have you tried dragging a bed into your inventory?
There has to be a means to do it. I mean, I have read people taking chests, filling them up and stacking them in another chest, etc... in order to take advantage of using the chest as a weapon with telekinesis (ie items with more weight do more damage).
