Having gone to OCAD, this place was my second home. " Oh NO! I forgot to get paper for today's drawing class" Was a sentence I said way too many times. Thank goodness for this place. Plus the Student discount isn't bad either :)
If you need anything arts or crafts related you can find it here. This location is built out of an old house and it literally has everything you need under one roof. They also have pretty good sales on, so if you sign up for their newsletter you can stay in-the-know with all of the good artsy deals.
Also their house-branded sketchbooks are bar far my favorite to use. Best paper quality and for 7-9$ you can't reeally go wrong with that.