To stain it I used a dollar store "fix your wood" stain pen. It works really well and the colour is always right with these.
This is what the necklace looked like on. Pretty wacky. Also just in case you were wondering about the little white dots on some of the books- it's because they have a library sticker. I kind of liked it so I kept it on! Because really who doesn't wanna walk around with a miniature bookshelf with library books on it around their neck!