Answer:
My first is a heir; My second's a snare; my whole is the offspring of fancy; which I sent out of play upon Valentine's day As a token of love to my Nancy.
There is one in every corner and two in every room.
What has a neck but no head?
What goes up but never comes down?
I am in the past, never in the future. I don't exist, but have existed. I saw what you saw, and this is what I will ever see. What am I?
I stay where I am when I go off. What am I?