I got this toy Melodeon for €18,- at a local shop. It is pretty decent.
What sold me was that even the abused demo model produced correct notes. I decided to buy one and see what music it can pull, for fun. Found out its called a melodeon and here you will find the cheatsheet i made for some friends + some tunes to play. Have fun here and give me hugs if you succeed.

Outstanding performances, mostly from youtube;
Listing of (sheet) music pieces for the Melodeon, latest additions above.
The notation is quite easy distributed so you may collaborate after experimenting with songs. This page might help you get more from your toy instrument. If you send me a piece of music i will put it here for the world to see!
Please send in yours! Contact me at barrystaes@gmail.com.
Original carhorn: >< 65 4-4- 4 5 6665 [----------------] <> 5 6 An octave lower: (notice lower tones require more air) >< 32 1-1- 1 2 3332 [----------------] <> 1 2
Please send in yours!
Used as a changelog really:
news 20090203:
John hartnup kindly pointed out i had "melodeon" misspelled, so this page and url is updated. Again. :) Including the cheatsheet.
news 20090201:
I found out the instrument is actually be a melodeon, for those interested. Thats not what the box said, so i will leave the "Mini (toy) Accordion" phases in here for the sake of people in search for information on the nameless product. I have changed the page and url to reflect this though.
Usefull: it is diatonic in C-chord. Searching for music to play on it might get easyer using the right phases..
news 20090201:
The new cheatsheet is now full fledged! Version 20090201 Cheatsheet Mini-toy-Accordion.pdf. It finds your keys for any note, and introduces the notation for beginners.
news 20090128:
After seeing friends like the instrument as well i quickly made a cheatsheet to help them on their way once they bought theirs.