Oh, yes, me, I have the right answer here!! The MESS!!!!
Surely this is it!
What switch is it that flips in our dear children's brains that suddenly sends messages to their hands to drop all towels on the floor, and scatter all clothes, clean and dirty. What about cups and plates? When my kitchen cabinet are empty, I trudge up to my senior's room, and there they are, 4 or 5 glasses, cups and plates! And his closet is always empty, cos all the stuff is on the frigging floor! (are you getting that you touched a raw nerve with me here ...lol!).
Well, if you are able to trawl through the mess, and see the wood for the trees, check out the hub I just wrote on changing up/decorating your teen's room: 'Fun Ideas To Make My Teen's Room Cool'. Plenty of fun stuff to do if you can just find your way in the door :)