What toy or gift would you buy the baby? Why??
I think I would go pratical and get the couple a traveling play pen. that way, if Alice had to take the baby on set with her or went to visit Ioan on set, she could place the baby in the play pen to sleoo/play and watch all the action in themovie. Then when baby gets older, he/she can watch mommy and daddy doing what they love best.

A music box,playing a favorite Welsh song.

I love books and think Dr. Suess books are wonderful for language. But, for a newborn, I give one of those books with textures that the baby can touch and is pretty much indestructible.