TWO RHYMING RIDDLES

1)
I sit on your shelf, but I'm not a book;
I'm in your kitchen cabinets, but you don't use me to cook.
I'm in your bedroom, your closet too, and den;
Week after week you get rid of me,
But I always come back again.

2)
I'm one of five,
I'm not alive;
He who released me became a king,
He who received me died.

Answers:

1. Dust
2. One of the five stones David picked up for his sling, and with which he slew Goliath in the Biblical story.

Credit:
#1: Zack Guido in What Am I? Vol. 1