Hey there, does anyone know where I might be able to buy a recordable story??

I am a nanny leaving my job in January and I'd like to record my charges favourite story we would read together with my voice so he still has this to share thought might be nice idea but only hallmark has these books with only a few titles.

I'd really like fix it duck recordable story ideally. alternatively does anyone know companies or a way to record to cd?? I was thinking even dictaphone as wasn't finding many options but dictaphone unpractical for a 2 year old.

other wise I guess maybe a recordable tape player but bit old fashioned.

Any ideas greatly appreciated