Pick a small object to be given one day to your great-grandchild. Write a letter to that child explaining why you have chosen this object.

This was the key to my Grandmother's house. That makes her your great-great-great-grandmother.
When my Grandmother died, my Mum had copies made of the key to her house and gave them on silver chains to me and my sister. I think of this key as a key to my past, my family and my heritage. Mostly it is a key to love.
Think of love when you see it and wear it. It's nice and heavy, so you'll be aware of its presence whenever you wear the chain around your neck.

Tell a complete stranger about a beloved family tradition.

Don't ask what the rhyme means. I'm not sure my Aunt even knows what it means :D

Tell a complete stranger about a beloved family tradition.
When my sister and I were little, we used to stay at our Grandparents' place in Bondi. It was a big, beautiful house with green carpet on the stairs and the first floor. The master bedroom was huge, as was our Grandparents' bed.
In the mornings, my sister and I would climb into bed with them and while away the morning. Part of this was singing a song made up by my Aunt when she was a kid.
'All in together,
This fine weather.
Stacks on the mill;
More on still.
Ah-ah, ah-ah-ah,
Ah-ah, ah-ah-ah.'