So. We know that at least part of Nightblood's wonderfully terrifying personality is that it was given a very vague Awakening command ("Destroy evil"), and if I remember correctly another part of it is that it's a sword, and there's really only one thing that you *do* with a sword, so that shaped its mind, too.
What sorts of effects might you get out of an Awakened item with a different shape and command? A shield instructed to "Defend the innocent" or a pen told to "share knowledge," for example?