My Grandmother almost never used any gifts that my Mom gave her, and that's even after 43 years of marrieage btwn. her and my Dad! I think that's what mothers in law must be liike alll over the world...
What about a beautiful crystal or porcelain vase with some fresh flowers in it? Its like doing two things at once...everyone appreciates flowers and the vase is a keep sake to decorate their new piso.