Support for other propsSuggestion
Are other models possible like a chest, tree, rock, etc. is it a game limitation?
It's possible, I can consider adding it in future updates 

That would be awesome! I just used this plugin to prank my players and we all had tons of laughs (and some pants to be changed)! Brilliant! :-)

hey dana any update on adding more props it would be nice 

So you can add your own props in the config, I changed the zombie to the scarecrow prefab, be warned if you use patrol heli it will attack people XD
https://www.corrosionhour.com/rust-prefab-list/ I used this site to search for prefabs, although not everything works

"zombie": "assets/prefabs/npc/scarecrow/scarecrow.prefab",
"crate": "assets/prefabs/deployable/chinooklockedcrate/codelockedhackablecrate.prefab",
"heli": "assets/prefabs/npc/patrol helicopter/patrolhelicopter.prefab",