Models can be made in a variety of different materials:
Made in sugar, individual babies would be a cute and cuddly decoration on celebration cakes for young toddlers and babies and baby showers.
Made in non-edible modelling clay, they would make wonderful ornaments and gifts.
Different coloured modelling paste and your imagination are all that is needed to make different outfits for the babies using the basic stages shown to produce other breeds of dog, cat and rabbit, along with ducks, fairies and elves.
The possibilities are endless.