I've always enjoyed browsing Craft Warehouse for ideas. They set up little displays with all the things you need (and instructions) right in one spot. They have a good selection of crafting supplies. My husband has even picked up a few things for his hobbies here as well. My favorite section is the scrapbooking supplies which was recently expanded to include a larger variety of items, and more namebrand trendy supplies.
They do not accept Joann's or Michael's coupons, nor do they offer one of their own so I usually try to find alternative supplies at the other stores.