Hachikuji Mayoi

From anime show Bakemonogatari, (化物語), one of my favorite (support) characters is Hachikuji Mayoi. She always carries a big pink backpack, wears a hairband, and sports ponytails.

Funny fact: She always misspells Araragi's name.

Im curious of what ítems does she carry in her backpack all the time. I think they say it in the manga or in the second season of the show but I dont know.

Source of the images: yande.re (old oreno.imouto.org)