My wife sits on the couch, "indian style", with a laptop in her lap angled at about a 45 degree. She holds the edges of it with her arms, and brings the keyboard up to her stomach kinda...

Its hard to describe but its surprisingly comfortable looking and allows her to tap her way through everything without actually having to hold the screen up. If she lets go, the hinge keeps it up. If she needs to type, she just skoots it back back slightly