CUTE HARRY/DURSLEY HEADCANON
So, I have this headcanon that Harry stole a blanket from Vernon and Petunia's room because it smelled like Petunia, and whenever he was sad he'd hole up in his cupboard and drape in on his shoulders like he was being cuddled by Petunia.
Once, Vernon noticed the cupboard door was ajar and looked inside and saw Harry, asleep, tightly clutching the missing blanket from the linen closet. Strangely, he felt this surge of love and took a picture.
It's the only photo in his wallet that he carries around every day.