What’s up with toddlers insisting on taking everything with them before they leave the house?

Like last week, Vienna was firm on taking her dad’s USED boxers to daycare. Yesterday it was my headband. And today, it was two stuffies, a book and her rain boots (not to wear, just to hold). 

What's that unusual thing your kid was/is attached to? I think Yvonne's story wins this topic. Hilarious and ADORABLE!