[Jason Abbadon]

Awesome diorama stuff cheap from Amazon:
http://www.amazon.com/Supplies-for-t...R1FNZMR435A9SZ

Check out model train stuff too- those guys make awesome dioramas- stuff like tunnel mouths look fine with MU for sewer scenes (for example).
http://www.amazon.com/Double-Tunnel-...=cm_lmf_img_33
$8.50 is pretty damn great for a diorama piece.
You could make a pair of big doors for the tunnel mouth and make it part of Castle Doom.

LOOK!
1:18 victims...er..."civillians" and diorama stuff!
http://www.amazon.com/s/ref=nb_sb_no...3Adiorama+1+18