When I was in elementary school, I played kokkuri with my friends.
We tried to divine the future using kokkuri.
こっくり is a shorter form sometimes used to refer to the same game or spirit, but こっくりさん is more common and personified with the honorific さん.
Katakana spelling sometimes used for emphasis or in informal contexts.
Ateji kanji spelling; rarely used in practice.
Variant with 様 instead of さん; even rarer than 狐狗狸さん.
The origin is uncertain, but it is often said to derive from the sound of the table or coin moving (こっくり) combined with the honorific さん, or from a blend of 狐 (kitsune, fox), 狗 (inu, dog), and 狸 (tanuki, raccoon dog) as a playful reference to animal spirits. The kanji 狐狗狸 are ateji.