There are millions of smart containers called geocaches hidden in almost every country on earth, just waiting to be found. There are probably some close to you right now.
If you want to try, you can try either Geocaching, a slightly simpler app in the free version or Cachly, a slightly more advanced app for some euros.
Are you out in the forest and want to look closer on something. Try to use an magnifying app on your Ipad. With 
Twinkl is a site with a load of resources (all in english), sorted in age categories and by subjects. There you find lessonsplans and other material.