voice playback recorder

hi, few months back i have purchase a handheld recorder (not toy,
similar to those used by journalist but with playback function). we
recorded her/mine/our singing, short reading, short conversation,
laughter and silly words that we made up. whenever she feels like it,
we will playback and listen. we enjoyed it very much. its mobile and
useful. she also pickup new words/phrase by listening to the cassette
repeatedly (depending on what you record).

perhaps i can also use it to record some points/attributes which we
want to drill into her. but of course in a fun recording manner.

just to share this tool of learning/fun....
have you used it? any new idea/comment? pls share.

regards,
jean