Try your local library. Even little libraries usually have a few cds or language tapes/dvds.
You could also check on Craigslist.
Try online, they may have lessons. I know you can go to to this site:
DLTK's Countries and Cultures Section
Look up Mexico/Spain and they have a bunch of kids friendly activities.
Also you can try stores like Staples where they have kid friend 'workbooks.' They might have something in Spanish.