A "Yui Gift" is a memorial gift given by the bride and groom at their family reunion dinner party as a token of their gratitude, saying "Thank you for everything. Yui Gift" is a memorial gift given by the bride and groom as a token of their gratitude for all that has been done and all that will be done in the future.

How about giving a handkerchief as a matching item for the "Yui Gift" that can be carried by the groom, the bride's new family members, and the two families?