The banana trick is cool, I tried it. I am sure to mention it, later, along with that cheap as free library vandalism trick.
I'm just playing around with that A great upside to kicking bananas and then eating them on spot is the pile of peels that may kill off the tourists for extra food. Yum yum, head of a child tourist
Most require at least 10 intelligence in order to science talk. Banana growers are useless, since they constantly move, it's hard to talk to them, and don't give you much of a raise anyway. Scrolls won't help you right now either.
Just stand in the eastern corner of the map, in their path, and you will block their exit, so that 3 banana growers surround you and can't move
Worst case scenario I had was uncontrolled polymorph in UT2, then having a master necromancer spawn and dying, resulting in a bone level with the encounter. I had Izzy spawn a few times due to polymorph, too, but never left a bone level...
Sure, I'm just kidding about other real options. I tested it out and couldn't hit a hedgehog with a thrown backpack in 20 attempts. Of course, there still might be a 1% chance of actually killing the hedgehog with a thrown backpack, but you'd probably fall asleep before even seeing it happen in Wizard Mode.