Ahh, I have loads of collections but my biggest are probably my Delta Goodrem and Britney Spears ones.
Delta Goodrem collection
Albums-
Innocent Eyes [uk]
Innocent Eyes [aus deluxe]
Innocent Eyes [japan]
Mistaken Identity [uk]
Mistaken Identity [aus]
Mistaken Identity [uk deluxe]
Delta [aus] x2
Delta [aus limited]
Delta [us]
Delta [japan]
Believe Again: Australian Tour 2009 [aus]
CD singles-
Born To Try [uk 1]
Born To Try [uk 2] - with poster
Lost Without You [uk 1]
Lost Without You [uk 2] - with poster
Innocent Eyes [uk 1]
Innocent Eyes [uk 2]
Not Me Not I [uk 1]
Not Me Not I [uk 2] - with christmas card
Predictable [aus]
Out Of The Blue [uk 1]
Out Of The Blue [uk 2]
Mistaken Indentity [aus]
Almost Here (feat. Brian McFadden) [uk 1]
A Little Too Late [aus]
Together We Are One [aus]
In This Life [aus 1] - with poster
In This Life [aus 2] - with sticker
Believe Again [aus]
You Will Only Break My Heart [aus]
I Can't Break It To My Heart [aus]
I Can't Break It To My Heart [aus limited cover]
DVD's-
Innocent Eyes [uk]
Delta [aus]
The Visualise Tour: Live In Concert [aus]
Hating Alison Ashley
Believe Again: Australian Tour 2009 [aus]
Max Factor 2008 (fanmade)
Other-
Lots of UK magazine clippings/posters from 2003-2009
Cosmopolitian magazine 2007 [aus cover]
Madison magazine 2008 [aus cover]
OK magazine 2008 [aus- cover]
Cosmopolitian magazine 2008 [aus- cover]
2004 official calendar x2
It's Easy To Play Delta Goodrem PVG book [2003 edition]
It's Easy To Play Delta Goodrem PVG book [2009 edition]
Innocent Eyes PVG book
Mistaken Identity PVG book
Believe Again Tour tourbook
Britney Spears collection
Albums-
..Baby One More Time! x2
Oops!.. I Did It Again
Oops!.. I Did It Again [uk special]
Britney
In The Zone
Greatest Hits: My Prerogative
Blackout
Circus [uk deluxe]
Circus Fantasy - free with perfume
The Singles Collection [cd/dvd]
Casette singles-
(You Drive Me) Crazy
Born To Make You Happy
CD singles-
..Baby One More Time [uk 1]
..Baby One More Time [uk 2] - lost the poster
Sometimes
(You Drive Me) Crazy
Born To Make You Happy
Oops!.. I Did It Again
Lucky
I'm a Slave 4 U
Stronger
Overprotected
I'm Not a Girl, Not Yet a Woman
I Love Rock 'n' Roll
Toxic
Everytime
My Preogative [uk]
My Prerogative [europe]
Gimme More
Piece Of Me
Break The Ice
Womanizer
Circus
If U Seek Amy
3 [aus]
DVD's-
Britney Spears: Live & More
Live From Vegas
Greatest Hits: My Prerogative
Onyx Hotel tour (fanmade)
Britney: For The Record
Circus tour merch-
Tourbook
Ticket
Mask
Mug
Red cup
Clear cup
'Womanizer' burn-out top
Keyring
Mousemat
Umbrella poster
Other-
Loads of magazine clippings/posters 1999-2010
Elle Girl 2005 [cover]
Heat Magazine 2007 [cover]
Heat Magazine 2007 [cover]
Glamour magazine 2009 [cover]
Curious perfume 100ml x2
Curious perfume 30ml
Curious perfume/body lotion giftset
Fantasy perfume 100ml
Midnight Fantasy perfume 100ml x2
Believe perfume 50ml
Hidden Fantasy perfume 50ml
Circus Fantasy perfume
2004 unofficial calendar
Slave video costume
My Circus tour photos/videos
God, that took forever and I've probs missed some stuff!