Treasure box

My sweet granddaughter had fun this afternoon decorating her treasure box. She's excited that she is going to have a special place to put all her treasures. Knowing my granddaughter they will be rocks, shells, acorns and maybe a bug or two!
My box would be filled with photos of my family. What would you put in a treasure box?
"for where your treasure is, there your heart will be also." Luke 12:34