Akademik

кто что
КТО ЧТО (кому что, кто о чём и т.п.) coll
[NP; may be used as indep. sent in response to an inquiry beginning with "Что", "О чём" etc about several or many people; fixed WO]
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one person (does, has etc) one thing, another something else, it is different for each person:
- that (it) depends (on the person);
- one person (has <does etc>) this, another that;
- one does (likes etc) one thing, another - something else;
- some do (like etc) some things, others - other things;
- some liked one thing, some another;
- it's different in each case.
     ♦ "Что им понравилось на выставке?" - "Кому что". "What did they like at the exhibition?" "Some liked some things, others - other things."
     ♦ Верховые были одеты по-разному - кто в чём, и напоминали сразу и мужиков и солдат, точь-в-точь как красноармейцы сводного полка... (Федин 1). [context transl] The horsemen were in various dress - in what they had been able to find, and immediately reminded one of both muzhiks and soldiers, exactly like the Red soldiers of the composite regiment .. (1a)

Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. . 2004.