Answer:
I build bridges of silver and crowns of gold. What am I?
I look like a tiny trombone
What type of house weighs the least?
I stink in living but when dead smells good.
Sometimes dark and sometimes bright I make my way among twinkling lights. Seas and oceans obey my call yet mountains I cannot move at all. My face is marred and gray But I'm majestic anyway
No matter how little or how much you use me, you change me every month.