Tash?

Yes, good job. Your turn. 🙂

In silence I made my home,
In little I took interest.
My youthful folly I could not atone
But later found that it was best.
Who am I?

*squeaks* Eustace?

Nope, sorry.

Wow, hard one! Hmm... *thinks* ...Lord Bern? Or Emeth?

No.
Hint: the silence is rather important. 🙂

Lord Rhoop?

Yeah, that was the hard part of the riddle. Um...Rilian? Jadis? My brother suggests Father Time.

Sorry, no.

I snort in derision
at others' decisions
and my sense of pride
I cannot deny.

Oh my goodness, this one is hard...
Oh! Oh! Oh! Wait! It's Bree, isn't it? (Or, if we're being particular, Breehy-hinny-brinny-hoohy-hah.)

Very good, Hobbit. 😀

YES! Wow, that was surprisingly hard. Now, which one should I do? ...

I never have been,
And I never could be,
For the world’s greatest forces
Fight inside me.

The Phoenix?

Nope.
Hint:
Good guys and bad guys,
They both of them flee.
Inside of a shed,
Who will come in and see?

Wow, that totally gave it away. 🙄