I just thought I'd mention this here. I put out a free, nonprofit kids nature magazine every month called Wild Kids Magazine. It's usually about 20 pages and is in full color, designed to be read online or on a device like a kindle or printed out. Every issue features ways for kids to learn and play with nature, seasonal poetry, nature journal pages, foraging information, etc. There is usually an in depth topic for each year like herbs or flowers, and this year it's wild mushrooms, with kids learning about two new wild mushrooms each month.
The July 2023 issue just came out yesterday and you can access it on the main site here:
Wild Kids Magazine. All of the past issues are online too, going back to 2019.