Interpret Twilight covers. Creativity wins 4 props.

Twilight: These books should be forbidden to be read, but the temptation is too great for some. Also symbolises the beginning of poison to the minds of those that are too weak to resist the "OMG PREEETTY SPARKLEZZ!"

New Moon: The minds of those that fell to the lure of pretty characters are beginning to wilt. Also symbolises those that are sane and didn't succumb to the sparkles - they are wilting inside as they see the extent of the damage done by the book to innocents.

Eclipse: The sane people now fight back - they tear in half any fear of the books (and the actual books, if they have them), and begin to rebel against the poison. Also symbolises the minds of those who are now totally seduced by its power (ahaha, LOTR quote. Not exact, but still) - their sanity is shredded into pieces and they become known as "the Twitards". AKA rabid [Twilight] fangirls or Twazis (those that are so blinded by sparkles that they turn violent).

Breaking Dawn: The sane ones begin openly resisting, moving in on the insane ones and thus beginning the fight for the freedom of the innocent (but sadly, currently insane) minds of those blinded by sparkles. Also symbolises the often pathetic attempts of the insane ones to fight back, defending the poison.

I am extremely sorry if I have plagiarized something anyone else has said. I absolutely love some of the other answers to this question. I do know the true meanings of the covers, and I think that they are extremely cliched and unimaginative. The covers are also boring - they all follow the same colour scheme! Don't people get bored of seeing the same old black and red, used for every book?

Another thing regarding the BD cover: how can it symbolise "checkmate" when there isn't even a king piece present? That larger piece looks an awful lot like a queen to me, not a king.

I'm not a Twilight Hater
The apple is posion of what started the series
The Flower is wilting from being on the cover
People are getting so mad with the series that they are tearing the ribbion apart
The Chess Piece shows that this was all a game and they checkmated

I just thought this was funny. No offense to Twilight.

The Apple: Beware, what comes henceforth is evil. It is a temptation but one must resist for the sake of preserving one's intelligence.

The flower: Innocence ruined and stained by sparkling vampires and brooding girls. The white tulip symbolizes impressionable teenagers and the blood symbolizes the corruption of their mind.

The ribbon: Symbolizes the broken connection between mind and reality.

The chess piece: The authoress who is walking towards her bank, laughing all the way while serious intellectuals weep at the blasphemy that has occurred in the literary world.

(No offence intended but she did ask for a creative answer and I thought that I might as well make it amusing.)

Twilight: Apples have worms in them sometimes, worms make me vomit, incidentially, so does Twilight

New Moon: Tulip or whatever flower that is, well, it's covered in blood, and every time I read New Moon, by the end, so is my wrist

Eclipse: Ribbons go in hair, hair is on head, I'd rather hit myself over the head with this book than read it.

Breaking Dawn: I find chess as boring as watching grass die. And... OMG, I also find BREAKING DAWN as boring as watching grass die! Wait, even more boring. Ah would you look at that, coincidences make me laugh.

that one's gonna be mad and probably not real:
a) the apple symbolises the love (ahh that is so sickeningly cute xd) ed gives bella (that's why the apple is in one's hands, because if it was alone, i wouldn't say so ;))
b) the flower looks quite like bleeding, and bella's heart is bleeding because eddy left her (he's a bastard)
c) the ribbon is torn because Bella can't choose between ed and jacob, so she's also torn (here i agree with Renesmee_XD).
d) the queen symbolises bella because now she's stronger, no one knows why indeed.
am waiting for doubts. ;P

Twilight Apple - the forbidden fruit, Edward and Bella's relationship is forbidden
New Moon Tulip - the wilting tulip shows Bella's emotions when Edward leaves, it breaks her
Eclipse Ribbon - Bella is torn between her love for Edward and her comfort with Jacob
Breaking Dawn Chess - the background pawn is Bella as a weak human, whilst the queen is front is Bella as a vampire; this is showing her transformation

twilight book cover- The Red apple symbolises the forbidden love,and the obstacles whom they face(as the forbidden apple from snow white,if anyone remembers;) )
New Moon book cover -that has some parts of the flower petals,red symbolises her love for edward but also the 'bleed' from her heart when he left,also I couldn't help not notice,the position the flower has,staying inclined,lifeless.
Eclipse Book Cover--represents Bella's heart torn by the choice she had to make,choosing between Edward or Jacob,as the torn ribbon stands for her torn into two.
Breaking Dawn book cover-the breaking dawn book cover stands for bella's transformation,the red small 'pionese' stands for bella,before the transformation,powerless,weak,and mortal
The white Queen chess 'pionese' stands for her after the transformation,changing frastically as she has now a new appearance,personality,she is immortal and powerful.
The four Book Cover's represent the whole concept of twilight's plot...

1) The apple is because eddikins wants to NOM bella.
2) The red flower is a symbol of lust - bellas lust BOTH blokes.
3) Ribbon shows how small and easily manipulated her mind is as this is all freakboy 1 and 2 do in this book.
4) The chess game tell us eddie has won - he has conquered bella once and for all, and she will never be able to leave him now.

Um . . .
Twilight: The apple stands for the forbidden fruit, and Bella and Edward's "forbidden love".
New Moon: The flower . . . is pretty. Which reflects on the shallowness of the series.
Eclipse: The torn ribbon represents Bella being torn in half by Jacob and Edward.
Breaking Dawn: The chess game is in checkmate, signaling the end of the game (AKA the series)

I wasn't really trying to be creative, just trying to guess what they REALLY mean. Except for New Moon, LOL. Was I right? I know I was right on the first one . . .

Apple - Rotten
Flower - Tries to make it look pleasing
Broken ribbon - What happens to our brain cells
Chess piece - Bella is a pawn in Edward's game

Apple- for throwing at twilight lovers.
Flower- for giving to twilight lovers with allergies.
Ribbon- for strangling twilight lovers.
Chess peice- for challenging twilight lovers to magical chess which they will lose for sure.

Twilight- it's healthier to digest a poisoned apple than Smeyer's redundant words describing Eddiekin's hawtness.

New moon - it's better to read about a girl in wonderland painting white flowers red than a girl in sparkle-land jumping off a cliff.

Eclipse - it's the very few threads that connect pieces of a badly woven plot.

Breaking dawn - it's that white queen author who cashed on twihard pawns.

I feel like a cackle's comin'!

Obvious visual metaphors does not equal creativity :/
I'm not saying the Harry Potter covers are any more creative, personally I find them to be at an equal level.