What keeps Bud in his tobacco pouch?

Rock's with writing on them the writing is where Herman E calloway got the rock and what the date was that he got it. (Herman E Calloway collects rocks because when his daughter was young he asked her if she wanted anything from a place he was going she said she wanted " a wock" yes a wock so now Herman E Calloway collects rocks from where he's been) and buds mom (Herman E Calloways daughter) had some rocks and when she died bud got them.