A Short List of Spanish Circle Time/ Storytime Resources - Una pequena lista de recursos en espanol para rimas y canciones
These are Spanish picture books mostly, and are chock full of rhymes and little poems. I will add them to my amazon shop, so you will be able to browse them.
My Mexico - Mexico mio - this one has some really nice authentic artwork, in very soft, muted tones.
Pio Peep has even more variety of poems, (real traditional ones, as opposed to translations of English rhymes). I personally find this very important, since rhymes have to do with history and culture, and thus one can learn a great deal through them, especially children, who will absorb these things in a natural way.
Mamá Goose is very similar in scope and style to pio peep
Arroz con leche - again rhymes and poems, but very authentic artwork
Those might make a nice starter shelf for anyone wishing to add some Spanish to their daily routine or circle time.