Some cheap backpack options (that are not herschel).
They were about 40 CAD each :-D
Jansport Heritage Ski & Hike. If you're short this is (for once) a proportional bag. Bonus: it's ultra lightweight, brought it hiking and it was excellent.
Pendleton Computer backpack. it's a good size and surprisingly fits everything (ie laptop, gym clothes, snacks, books etc.)