Okay, here's one that JadeFox inspired me to write from her LOTR Poetry section. It's in Italian Sonnet form with 10 syllables per line, with an 'abba abba cdcd ee' rhyme form. Not as simple as it sounds...
The RING
Simple band of gold etched with fire
The death of all who wish to wield it
Changing sizes the way it wants to fit
Greatest Enemy's only desire.
From this band, many grow old and tire
To care for this thing which they have commit
Their lives. All have thoughts and dreams to transmit
It to fresh owner. Only the Shire
Hobbits can do this for all else fail.
What shall come of these loving little folk?
To but be strong for this task and not frail.
Sadly, none else can take this heavy yoke.
With dread in his heart, Frodo leaves his friends.
Once this thing is destroyed all things shall mend.