One thing I haven't seen mentioned here is using it for notes. If you read them from your phone people are more likely to think of you as unprofessional, but an

One thing I haven't seen mentioned here is using it for notes. If you read them from your phone people are more likely to think of you as unprofessional, but an iPad will register as something else, like a clipboard. You could also print, so this is more of an "I have it, may as well use it" thing.