fondly regard wall.
That's a real good...wall..
Do something stupid like dig the floor out from under you like a real dorf.
Uh, how do you dig through a solid stone floor?
pick up the table pieces
Put table pieces in inventory and go out open doorway.
Pick up Table of Seeing again to see if you become strangely aware of anything else around you.
You quickly pocket the pieces of table. One of them would be able to be fashioned into a hilt of some sort. The other two could just be burnt. You quickly handle them, because you see that it's painted with a grey lead paint.
Call out to the forest creatures for help.
What forest creatures? I'm pretty sure screaming out of the barred windows would attract whatever put you in that cell.
Oh crap! Orcs!
One has spotted you!
