If I put my baby in the Red Castle Cocoonababy nest during the daytime, how can I distract him?

You could put the nest onto a play mat with a toy bar on it or put him in his cot with a musical mobile to look at - but ensure that the toys are level with his feet and not directly above his head. Contrary to usual practice, it is very important that a child lying on his back should have his gaze drawn towards his feet to encourage him to adopt a cradled posture. If his gaze is drawn above his head this encourages a hyper extended posture which is detrimental to his comfort and development.  When lying in the nest, baby will also be able to watch the other family members – and he will be happy to participate in what is going on around him.