This is a wonderful store packed to the brim full of gems! I'm not a regular sewer but go there for wonderful ribbon, fabric, and buttons for my other projects (including book making). Its also wonderful to go just to see what other kind of projects they have to make that you may never have even thought of - the teddy bears and dolls are wonderful. They do quilting, punch needle, high quality felted wool and much more.
One thing to keep in mind, this is not somewhere like Fanny's Fabrics. This is a store with high quality merchandise and you do need to be respectful and careful of it. If you bring in a coffee, expect to be asked to leave it at the front desk (I can't imagine carrying a coffee around in there, it would be way to dangerous!) .
The staff are wonderfully helpful and if you describe your project will spend time with you helping to find the right colours and accessories.