Hi guys, I need your help.

I'm going to make a book or series of books where I teach kanji along with their pronunciations and synonyms together, so for example:

ツリー　き　もく　木
ブック　ほん　本

The text for learning is going to be something like this:

"In my yard is a big 木 (tree). The 木 has lots of branches. When I climb it, the 木 (ツリー tree) shakes a lot. One day while climbing the ツリー, I fell."

What I need is out-of-copyright, interesting texts (Japanese folktales? History of Japan?? Or stuff unrelated to Japan, like your favorite book?) that YOU guys would be interested in reading, that I then turn into these "teaching kanji" texts. Meaning stuff from openlibrary.org, gutenberg.org, archive.org and so on.