It needs to be unique, yet general in nature, when you don't know who always be receiving your gift.
Book stores like Barnes and Noble carry Family History books. What about busty up and coming brides?
Substitute Teacher & Teacher Absenteeism
How to Be Always A Substitute Teacher
People who wish to turn into a substitute teacher (also called a sub, alternative or sub-instructor) and work-in a PCMI customer area(s) should satisfy Condition and PCMI needs.