Personalized World’s Greatest Mom Printed Plaque – Custom Mother’s Day Plaque. You know your Mom is the best#44; so why not award her with her very own Personalized World’s Greatest Mom Printed Plaque so she can proudly display her accomplishments. A Custom Mother’s Day Plaque is a great gift from the kids even on her birthday. .Your World’s Greatest Mom Plaque measures 8″ x 10″ and includes slotted holes for easy wall mounting. Includes FREE Personalization. Personalize your World’s Greatest Mom Printed Plaque with any title and any ending 2 line custom message. Please choose Mom or Grandma.