My #1 favorite and cheap place to get craft supplies in Saskatoon is the Mennonite Clothes Closet on 20th St. They have awsome stuff for so cheap. I knitted a hat from a bag of wool I purchased for 30 cents.
My #2 favorite place to get craft supplies in Saskatoon is Micheal's. They have sooo much stuff. I could totally get lost in there. Sometimes in can be a bit expensive . . . ohhh well . . .they have everything you would ever need.
Other places to go would be Lewis Craft, Home Depot, Value Village, Art Placement (what a nice art store), Colours, Mayfair Hardware . . . .ect.