There are baby-changing facilities in second class on most TGV's. There are, however, no baby-changing facilities on the TGV Duplex.
Bar coach
There is a bar coach in coach 4 or 14.
Hot and cold drinks, snacks, salads and magazines are available here.
You can have a baby's bottle or meal heated up here.
Bicycle spaces
You can take a bicycle packed in a bicycle-cover as luggage on the train with you.
You can take an unpacked bicycle on a limited number of TGV's with you. These bicycle spaces cannot be booked through NS International. Please do so at SNCF.com.