Except for: miauw - woef - toktoktoook - kukelekuuu, knorknor (sounds animals make) and 'auw' there are no such words I learned as a child, same for my children.

A part of what you mentioned sounds more like 'comic language' to me which were not considered books and forbidden.

My English isn't good enough to understand the explanation but I kind of have the idea (a word that describes a sound). I doubt I will ever remember it.

☹️
I guess this means I learned nothing

Good luck with the contest.

P.s. I asked the kid again she says the Japanese language uses it way more than we do.