The CR - V has a roomy practical well - designed interior with simple instruments and easy to use controls. (samarins.com)
However, I think the eyes are the most unique in that we can directly observe most of the pathology in them with our bare eyes or with the assistance of simple instruments. (vetstudentstories.merckmanuals.com)
It's easy to gather simple instruments like pots and pans that children can use to keep time with music or count beats. (educationworld.com)