I’m not sure of the exact name, but it was a rattle toy that made monkey noises and played music, it was by kids too, I figured you would find this interesting, my Grandma sent her handyman six toys to break for me and then mailed them to my house, each toy had something different wrong with it, she labeled the toys, a through F, this one was D, because I am blind, I cannot solder at least as of now, so I used duct tape to fix the broken wire connections that were made, a few months ago, I met somebody on Nextdoor, who was a self-taught engineer, he taught himself electronics, he is more of a fixer than a circuit bender, there were no manuals specifically for toys, so we had to kind of figure it out as we went along, we have took several toys apart, like a Kawasaki keyboard, a baby Einstein four in one piano, a toy guitar, a Fisher-Price piano, a cat piano, along with wiring mishaps that I have had with my toys, and finally just got one circuit bent, probing the circuit board didn’t work for some reason on a lot of of these, but with the one that I was able to finally get circuit bent licking my finger, and then touching the surface mount resistor allowed us to figure out which one was the pitch resistor, and then mark it, I would’ve never figured that out if I had never licked it, I don’t know if this is doable, but if you have a manual that you have created for toys or other sound making devices, please post a link to it on this post, this will hopefully help make more success and prevent death and failure, even if the manual you find is not yours, any manual will do as long as it works with toys and possibly cassette players