Books recommended as 'easy'

I found a helpful post on Amazon.com where someone recommends easy novels to read while learning Spanish. I hope to order them and see whether they might be good for Spanish 2, since I'm all about feeding kids authentic rather than learner Spanish from the beginning.

One is La Tierra del Fuego, and the other is El Clan de la Loba/La Guerra de las Brujas.

For Bethanie, who asked a long time ago, and anyone else who cares.

**update**
Here are a couple of other options recommended to me via Twitter and Amazon:
A children's sensation in Spain, Manolito Gafotas (if you can find enough copies en español)
The last of the Manolito series, Manolito Tiene un Secreto
Adventure novel Limpieza de sangre
El pirata Garrapata (and sequels)