Ideas

A picture-story writing game for kids that lights up each picture once they've named it

Children aged about 7 to 9 would see a small row of pictures and write a few sentences that use all of them. As they type, each picture lights up when they use its word, so they can see what they still need to describe, and if they're stuck, tapping a picture shows or says the word. When every row is done, the pieces join into one story the child can read back or hear read aloud, then turn the page for a new set. A parent or teacher would choose the pictures and their words, and it would need no accounts or chat.

Asked for by a poster on Software Recommendations Stack Exchange

A syllable-pair explorer for kids learning Chinese pinyin that lists the words each pair makes

Young Chinese learners could use a toy where they pick two pinyin syllables and see every word those syllables can form, with tones, meanings and pictures. A switch would let the child search with or without tones, since in films the tones are often hard to hear. It could be built on a free, open Chinese dictionary as a simple website, helping kids look up words they hear in subtitled videos.