Answer:
I crawl on the earth. And rise on a pillar.
Upon me you can tread, though softly under cover. And I will take you places, that you have yet to discover. I'm high, and I'm low, though flat in the middle. And though a joy to the children, adults think of me little.
It doesn't live within a house, nor does it live without. Most will use it when they come in, and again when they go out.
What can run but canβt walk?
I have many feathers to help me fly. I have a body and head, but I'm not alive. It is your strength which determines how far I go. You can hold me in your hand, but I'm never thrown.
What language does a billboard speak?