Hmm, lets see... on the average school day:
Backpack-
*Drawings
*My Class Notes
Lots of trading cards(Naruto, Yu-Gi-Oh, Pokemon)
Pockets-
*Cell Phone...If I can remember it
*My near empty wallet, with more band-aids than money
*Pencils. Lots of them. All sharp and pointy
On-Hand-
*Textbooks, usually 1 or 2
Other-
*My USB and house keys on a.....lanyard...necklace....something or other
*School ID on a separate lanyard, because of my school's dress code
*A plastic ruler and a metal ruler. The plastic one's mostly in my pocket, the metal one switches a lot between my pocket, my jacket sleeve, and inside the textbook, which got me the nickname "Samurai" with a few people because of how I hold it when I carry it/them around
On any other day...I don't really carry anything around actually