Why not a Mop Drone? It stays on the ground, just like the tank drone and mops the floor or any other object if blood or any other staining element is present and has hit the floor or any other object.
If a doll with gloves has a kevlar vest on, they raise their hands and the kevlar vest shakes like the abdomen of the doll is going to explode. Can you fix that? Please?
On handcuffkidd's nanovirus idea- why not antivirals and antibiotics to cure blight and the nanovirus? They would be either injections or vials or sprayers.
Can you give us tornadoes? It would be a ghostly item, with a 400 radius and well... does what a tornado does. An option would be different tornadoes, comparing in size and go according to the EF scale.
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You can use the Fire Detector and link it to Spray Nozzle or a tiny Fountain.