Recently playing around with d20 Modern Content I have tried making placeable.2da objects into appearance.2da entries (and scaling tails...)
Most seem to work if the facing is correct (and some seem to actually support plc animations, often to amusing results, like arcane space...)
As long as the plc's orientation point faces to the rear, many standard PLC mdls can be used as creatures with no other modifications.
A few examples of PLCs that "Behave" themselves as Monsters: http://neverwinterva...ke-plc-monsters
(2da snippet demonstrates how to use various content from d20, Arcane Space, CCC, CEP, SWC, and Project Q PLCs as appeance.2da creatures)
"Beholderkin: Hagioscope"
"Plant: Vampiric Roses"
"Plant: Yellow Musk Creeper"
"Ship: Airship, Blue"
"Ship: Airship, Red"
"Ship: Ghost"
"Ship: Spelljammer, Squid"
"Ship: Spelljammer, Clipper"
"Ship: Spelljammer, Arrowing"
"Ship: Spelljammer, Shell"
"Plant: Tree, Mirkwood"
"Poltergeist: Dishes"
"Poltergeist: Pots"
"[VFX] Magic Mouth"
"[Modern] Humvee"
"Scrying Field"
"War: Crossbow, Large"
"War: Bow Ballista"
"War: Cannon 2"
"War: Cannon, Large"
"Plant: Tree, Willow 1"
"Plant: Tree, Willow 2"
"Plant: Tree, Willow 3"
"Plant: Tree, Dead Willow"
"Plant: Tree, Dead Pine"
"Plant: Tree, Dead Oak"
"Plant: Tree, Pine 1"
"Plant: Tree, Pine2"
"[Future] Ship: Wraith Fighter"
Pics pending...
Basic Instructions: To make your own PLC Monsters, simply copy an archery or combat dummy 2da entry to use any plc mdl you wish to test as a creature, and tweak its portrait, env-mapping and movement rate to fit your needs...