So, let's say something like... Conjuring food from nothing? First thing that comes to my mind when you say creating something from nothing. So with that I'm trying to recall a single instance of someone doing something like that but I got nothing. Doesn't mean it's not there though, but for now I say impossible. But if we give a thought to some workaround I would say that Conjuration could work. I mean...creating food from nothing sounds quite complicated but summoning a delicious roasted steak from dining Dremora's fork sounds reasonable and also very funny. And Conjuration has the advantage over Alteration in the regard of duration. With Conjuration you can create permanent stuff, so it's not like you eat the steak and halfway through your bowels it returns back on the Dremora's plate... xD Damn, that's just so funny image xD