Nanny Knockers These adorable and cute little house elf type of fae Are some of the absolute best nannies. They often my help your children that are on the physical plane as well as guide your children that are in the airport they're a very good at what they do and every time there is trouble or they think mama needs extra support. they knock which is where they get their name from. It's not uncommon for you to be doing something with the kids up in bed and just suddenly hand knocking this would be your nanny knocker. There often older house elves that no longer have their own to take care of and wish to help another mama.  There are many old wife's tales that tell of these species and they call them by different names so it's not uncommon if you have come by one previously. My family grew up calling them these and that is what's I called them to the day.