My sketch book, slightly larger than an A5 ( I'm fond of that size) with schedule on the back. I think I need one per class cos all except one require workbooks to be submitted at the end of the sem. Some ppl have fancy schmancy hard-bound sketch books but i got this great one for cheap from a Rite-Aid. Which is like a 7/11, like a magazine/junkfood/stationery/cosmetics/all-in-one sort of store. And I covered the front with some brown paper to make it look non-unsightly and stuck a holographic roaring shiv sena tiger from my cool new india-sticker-collection that I brought with me.