Bring a small candy like a starburst, set it on the table and ask "who wants the candy? Who REALLY wants the candy? " Whoever seems most eager, pick for the example. Say, "Joey, (or whoever) you really want the candy. It'll make you very happy. So you can have it, but you can't use any part of your body to pick it up or unwrap it, you can only chew." So Joey'll be confused- how does he get it? Ask, is there anyone who is willing to help Joey eat the candy? See if anyone will. Afterward, talk about how the dead really want their work done but can't do it themselves. Why not? They have no bodies. Reward the helper with candy if you like.
