I'm starting to think about a muti-use drone (runs over, drops the grenade, then takes cover).
You could make it look like a chicken and lay eggs

And yes, Family Guy is where I'd heard it.
QUOTE
There always is the High Explosive Dragonfly variant.
Right, was trying to think of that, knew there were a few drones designed to blow up. I think there is that, the lonestar iball, and the hammerhead or whatever that drone missile is called in arsenal.