There is a lot of chatter about inclusive stories for kids. While in school libraries in the US and Canada these books may be few and far between, they are much harder to track down in some other places (and in some other languages).
Gabi pointed out this amazing site where you can actually download stories for kids in Spanish. The page is called Stories for Diversity and is produced by the LGBT collective of Madrid, COGAM. According to Gabi, the majority of the .PDFs download without any problem.

I took a look at some of the stories and they are really very cute. Not to mention, some of them are simple enough for a parent with little Spanish to be able to read to her son or daughter.