I gave my bun a CD player to let her listen to the radio/CD. She can also play baby songs to the new b later.
She can learn to cook Chinese food and learn Cantonese in her free time before b comes. U can also chat with her about non-work things, as she has no one to talk to at home.
I only give her 2 time periods to use her mobile: the rest period after lunch and after dinner. My ex-maid talked on the phone non-stop, even when she is cooking with her right hand, she holds the mobile with her left hand!!!