iNaturalist.org

Mostly, we believe that you should be outside as much as possible, playing and being active. It would be foolish though to act as if the internet didn't exist, especially when you find an interactive website as cool as iNaturalist.org.

Follow that link and you'll discover an ever-expanding library of plant and animal observations from around the world. Suppose you find an interesting fungus while hiking, you can take a picture (or sketch it and make notes like early naturalists did), go online and identify it. If you can't find it there, post it yourself and other folks can help you discover what it is. There are a staggering number of types of living things in our world, and it's a good feeling to be able to identify some of them for yourself.