Answer:
What is neither inside the house nor outside the house but a necessity for any home?
A house with two occupants, sometimes one, rarely three. Break the walls, eat the boarders, then throw away me.
Without a bridle, or a saddle, across a thing I ride a-straddle. And those I ride, by help of me, though almost blind, are made to see.
What do you throw out when you need it but put away when you donβt?
A great mysterious place that the bold have been known to journey into.
People take me on walks and I run and have fun. What am I?