Using nieces' and nephews' middle names.
My husband and I are both the youngest and as a result we have a lot of nieces and nephews.
Obviously we can't/won't use names that have already been used as first names. (I have 6 month old niece with the only girl's name that we could agree on.)
But can use names that have been used as middle names? Felix, Joy, Elinor, William and James are all names we might have considered that are now middle names of a sibling's child. Are they used up or are they still up for grabs?