Hm. Have you ever tried Carnation Instant Breakfast? You just add it to milk, and it can be nuked for a warm drink. And other than the strawberry, which tastes appallingly artificial, the flavors are pretty decent. Fairly cheap, too.

I can't have it 'cause I'm lactose intolerant and loathe soy milk, but back when I could still drink milk, it was the least obnoxious morning food alternative I found.