What are your Family HCs??

I love all the family headcanons and relations within hetalia from found family to adopted families to biological family within the show which I love love love SOOO MUCH nothing warms my heart more than seeing tomato gang/family fanarts, or the hapsburgs or the East Asian family to the nordics who seem like found family to me or FACE family, etc. That chibitalia and Grandpa Rome song was so wholesome 😭 😭

What are some of your general family HCs, whether it be 2 unlikely characters being family some way, to silly sibling traditions! What would they argue about or bond over or something about your ship adopting a child or another country, etc. etc. cause I am yapping too much but I can give so much examples

Please share !! ☆:.｡. o(≧▽≦)o .｡.:☆