It's the time of year that there are so many self guided tours going on all over the United States. Many are sponsored by county extension offices. Most are free, but some require a small fee or ask for a donation.
You'll find self guided tours on different farms, orchards, winery/vinyards, gardens, backyard water features/koi ponds, etc.
Check with your local chamber of commerces, county extension offices, and garden clubs to see what's available in your area.
The tour I found for us that I think would be interesting is the Miami County Kansas Eco Development tour, featuring 10 rural stops. There will be alpacas, goats, emus, pecan groves, fresh herbs/vegetables/fruit, as well as flower gardens.
Each farm specializes in an area, and most have some type of stand set up where you can purchase their products such as goat cheese or soap, meat, plants, etc.
Here are a few more that caught my interest:
Visit Pulaski County
Pulaski County Rte 66 Tour
Green County Missouri Historic School Tour
Miami County Eco Dev Rural Tour
Oregon Wine and Farm Tour
Prairie Waters Map List of Tours
What does your family do during the summer for frugal entertainment?