Reddit reviews Yunsheng Rhymes 30 Note Movement Engraved Wooden Music Box Play Moonlight Legend From Pretty Soldier ,Sailor Moon (Brown)

I feel like I've seen something like this on Etsy....I know Amazon has one but the box itself isn't sailor moon themed. Depending on how crafty you are you could maybe take the mechanism out and put it in a large Star Locket or custom made box.

Good luck and hope you find the perfect gift :)

Edit : Formatting stuffs

Thanks for the help! I ended up getting her this one:

http://www.amazon.com/gp/product/B00AYPU006/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1

and here's a video of it in action: http://www.youtube.com/watch?v=k475-TD5Uf8&list=HL1371590493

I think that's the closest to what I was looking for without it being a collectible.