You can use a GPS-enabled device. Some phones have an app that you can download. Your family will navigate to a specific set of GPS coordinates and then attempt to find the geocache (container) hidden at that location. There are geocaches in our area that contain toys for kids. The best part is that your children have fun exploring nature.
For more information on geocaching, please go to: http://www.geocaching.com/guide/
If you would like to try geocaching, type in your zip code at: http://www.geocaching.com/
Beginner caches (easier to find) will be highlighted in green. Under the D/T column (difficulty/terrain), choose the biggest red box. These containers are bigger and easier to find.
Enjoy your geocaching adventure!