Cleaning my room!

It was initially promised that I do this once in 3 months....then I begged for this to be a half-yearly affair....then once a year.....but the truth is, for the past 3 years, ever since I unpacked my stuff in the new house, I've never bothered to sort them out or clean my room!
This will be giving you a pretty decent idea of how bad my room would have been when I set to work...For those people who still haven't got a clue, let me provide some information about the room that can easily pass for "The Mysterious Dungeon of the Moonlight castle"...
My room was built in perfect accordance with mom's aesthetic vision...Lovely cream walls, yellow drapes, honey wood furniture...a dream of sunshine and peace...But the one thing mom overlooked was ME! I was born with this gift of ruining any room I stayed in and this one was no exception...Within 3 days, it became my den with books, clothes, chocolate wrappers and anything that you can imagine lying scattered on the floor, draws crammed with bits of paper and everything forever in a state of a terrible mess! The best thing is that no one dares to enter my room for two reasons..Reason1: They are aware that there are hidden traps everywhere..Mom could never forgive me for the bump in her head, which she got when she opened my cupboard for some reason and a globe rolled out of it and fell on her! Reason 2: My room is believed to be a black hole of some kind that it can suck anything and you may never find it again...Dad and my sis are really scared of getting lost in the black hole....So that establishes my full rights over the room...
But this time, since my room was needed to accommodate my cousins (if necessary), I was forced to clean it.... It was not a very easy task (didn’t think it would be one too)..It took me nearly 3 days to get my room presentable...And those 3 days proved to be actually enjoyable!
Cleaning my room was my worst nightmare, but when I got down to doing it, I discovered so many wonderful things that it never drained me the way I thought it would.... I found so many old papers...Papers that held in them memories so strong that I spent most of my first day trying to relive them at least in my mind...There were notes taken down in various classes, plenty of loose sheets with some good bingo or bull shit in them("bull shit" was a word game we played in school), phone numbers, addresses, pencil-paper chats, and some old forgotten poems of mine... I couldn't help but read them all over and over again and fondly recollect the past...Next came the photos...I better not talk about them coz all I did was wonder how a few years can make a person so ugly (if you cant figure out what I mean...forget it! I won’t explain)..Then there were so many little things like clips, dolls and cards that kept flooding my mind with too many memories and emotions, that Day1 was spent just getting the things out of the draws!!!
The remaining two days, I was wise enough not to muse too much over these things and despite the trouble I had deciding which of this precious stuff should be chucked, I did do quite a good job of discarding nearly 50 books, 5 kg of paper, and 7 large bags of miscellaneous stuff!
Cleaning my room was almost a journey of self discovery, realizing how much I've grown up, the various paths I've walked in, the hurdles I've crossed and most importantly, how much discardable junk I had stored in my room all this time, being too sentimental to part with them! (The actual reason is that I am lazy but come on..isn't everyone that way?)..All said and done, my room looks presentable now and mom seems happier...There is just one catch in the good deed I did...My cleaner room has now paved way for my sister to snitch things more easily...Got to do something to stop this...Any suggestions?