Rather than spend money on buying monogrammed napkins for every event, get an embosser with a great monogram and just emboss cheap party napkins. - not like i ever monogram napkins, but this is a good idea.
mother in law "You raised with love this gentleman with whom I will spend my life. He is proud to be your son and I am blessed to be his wife." -- great gift to get the future mother-in-law/father-in-law!