Who wants to solve a riddle?

Can anyone solve this riddle?

The definite article,
A reward,
Be present,
Frodo and a tree (or with Bilbo's ring).
Contained within,
Indium plus thirty,
(... Takes its toll) on me (and Susan Sarandon).

A call to battle, I'll take you on,
Bread, Milk, Bacon, Eggs, Wash the car,
Luna cognate,
They're what you seek as you search on!