Geocaching Is An Activity That Can Be Done Safely
Geoaching.com is the world's foremost site on geocaching. This activity, which you can do with your phone and their app, allows you to go hunt for hidden treasures out in the community. This is a great activity for pepole to do alone, or to take 1 or 2 others and each search for your own cache within a park, for example (often there are multiple caches nearby), so you can engage the family as long as each person has a cell phone or GPS unit.
To learn more about geoaching alone visit this page.
For ideas on other things you can do if you are isolated or quarantined in your home, visit this page.