I thought I'd share this recent one from Nature Girl. She's going to be a far better writer than me one day, if she isn't already. This note had me all blithering and teary... enjoy it (I've edited and formatted for your reading ease).
Mommy,
This is a flower
Not just any flower
A rainbow flower
A rainbow flower never ends
Because a rainbow never ends
Take a moment to think and
You should be thinking about love
Because love never ends
I love you!