When Lorne slips Angel the note, his left hand is fussing with the baby. Later, when the lawyers are watching the scene on video, his left hand is down by his side.
Tha Apple logo on Fred's laptop is upside down.
Angel pushes a round manhole cover off of a square manhole.
There are times it is obvious that the baby is a doll. For example, when Angel is trying to get the baby to take his bottle, Angel drinks from the bottle and says he likes it, when she shot changes to show Angel making a face, the doll face is shown. Also, there are times when you can't see his face and the stiffness of the baby indicates it is a doll.