One of my favorite things to receive in the mail when I was a little boy like you was the summer Weekly Reader. I don't know if they still have Weekly Reader, but if they don't, they should!
The Weekly Reader usually was just four to six pages of fun articles and games for kids to read and play. The articles were about interesting places, animals or people. We got them every week in school.
In the summer, they came every couple of weeks. A new issue could keep me busy for a couple of hours - so my mom was happy to subscribe to them for me!
I was able to find a few copies online of the Weekly Readers that I got in the mail. I included a picture of one here. Doesn't it look like fun? Maybe you can make a copy of it, print it out, and have your very own Weekly Reader page.
What kinds of things do you like to read?