The new Airplay abilities of iOS 4.2 have me wanting to add a couple more Airplay music zones to my house. Pandora and NPR radio throughout the house is just too good not to! I have the back porch, master bedroom, and family room covered and want to add a setup in the dining room and bathroom. What are my cheapest options for adding speakers an Airport Express can talk to? I'm not really concerned with big sound or quality in these 2 locations. I just need something that works and I don't mind ceiling solutions too because my bathroom is actually already wired from the ceiling for speakers. For the dining room I think I would prefer some sort of bookshelf solution.