What you need:
Small glass jar with the label removed (i.e. honey jar, baby food jar, etc.)
Have you been on a nature walk with your children, they may like to get down and look at the world from "a bug's life". This easy to create magnifying glass will help your child see the world in a larger way.
If you have a phone with you, take pictures of interesting insects, flowers, moss and you can look on nature and wildlife website to match up what you have looked at up close with your homemade magnifying glass.