Kinda (Definitely) stolen from the INTP forum, but hey, it's a good idea.
So, what DO you carry around with you, I'll start off.
I carry my backpack, it contains my laptop, a laptop cooling pad, my laptop charger, and iPod cable, a mouse, a mouse mat, a DS Lite, all my DS Lite games, a BIG ASS pencil case with lots of pens and pencils, pencil sharpeners and geometrical instruments, a notebook containing all the drawings of dragons I used to do. I also carry my iPod, two sets of headphones, a phone and a spare set of glasses. Oh, and an 280Gb external HDD.
That's an average day for me, in total, that bangs up to about 20kg of weight
How about you?