Pinterest is a resource that I have only begun to explore. Today I found a board named "Spanish" by Spanish Plans. The title of one of the Pins on the board is "Over 90 Websites with Ideas, Resources,...". One of those resources is a collection of Plaza Sésamo videos posted on YouTube, like this little gem "Arriba, Abajo, Alrededor y a Través":
You can find other Plaza Sésamo videos on MarshalArchibaldo's channel on YouTube at this link.
The channel for Plaza Sésamo can be found here.
Here is the link to Spanish Plans Pinterest board "Spanish" that is loaded with other useful resources. Enjoy!