Backpacks of great quality
The best way to carry the small things you want , be it books or files or a laptop, is to use a backpack. A good quality backpack would help you to carry these things even while you are driving down on a two wheeler.
Now there are professional websites on the internet which sell branded / popular backpacks, including north face backpacks.
Just log into one of these websites and then decide on which one to buy.