Answer:
What has a head, a tail, is brown, and has no legs?
Though I should be unique, you've made most of us the same. I would be stronger, if my characters were stranger.
In the middle of night, I surround the gong. In the middle of sight, I end the song
A standard dimension for sandwiches and rulers
You can tumble in it, Roll in it, Burn it, Animals eat it, Used to cover floors, Still used beyond stall doors. Freshens whatever it is placed on, Absorbs whatever is poured into it. What is it?
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?