We recommend having at least two, so in case any messes happen, you’ll have a backup while your other blanket is being washed. As you may have seen in your own home with your blankets though, it’s tough to have too many blankets, as they come in handy everywhere. You could have a blanket for the stroller, nursery and play area. You can use them to lay your baby on during tummy time or roll practicing, and you can use them to wrap up and cuddle with you. For these reasons, we think three blankets is a good number to start with.