One of the best ways to encourage your baby to start crawling is to give her plenty of supervised tummy time. (checkpregnancy.com)
Maybe some closely supervised tummy time first thing in the morning in the crib where the kid can see you (or the cat or a stuffed animal) through the crib rails. (askmoxie.org)
You can help prevent this «flat head syndrome» by giving your baby supervised tummy time each day while she's awake. (babycenter.com)