My bag is actually just my very expandable lunch box. It goes to and from work with me and that's about it, I generally operate on a if it doesn't fit in my pocket I don't need it sort of basis.
At the very top there is the bag itself, and the edge of tomorrow cloths. Below it my current book. And my mini-pharmacy that includes anti-itch stuff, pain killers, allergy medicine, and decongestants. Next are my spare hair elastics, my colorful pens, and my name badge. Kind of above that would be the contents of the side of the bag actually used for my lunch. So paper towels, plastic baggies, a left over granola bar and a single serving of lemon-aid mix. At the very bottom, my sunglasses and car keys.
If this bag was at work my cell phone would also be in there and maybe my water bottle.