Was going to post, except someone just beat me to it. :P
Cave Key Gift pack has a fixed reward of 88 cave keys, with a random drop of level 5 stones.
Limited Protection Rune Pack has fixed drop of 20 purification protection runes, random drops are level 4 and 3 mags, Chojuro frags, 100 puppets performance Sasori, Akatsuchi and Kurotsuchi.
Same for Purification Packs.