There are many different types of baby mobiles including ones that hang from the roof and others that connect to the cot. Both function to entertain baby during wake times and soothe them to sleep at sleep time. Cot mobiles are often muscial and slowly rotate. They are covered with cute material which can be chosen to co-ordinate with the baby's nursery. Often cot mobiles have hanging toys that engage baby, especially if they are rotating around. Most parents in Australia have some type of mobile for their baby, and use it frequently to help with soothing and relaxing their baby as well as to keep them entertained.