Tom Thumb is the local craft supply store in Evanston, outside of specialty bead and art supply shops. The prices are average as is the selection, but compared to many other local craft shops, you could say there's a pretty decent selection here.
They have wood, paint, paper, bead, and other hobby items.
They might have what you're looking for if you're a crafter/hobbiest, but it's not organized very well so you may have to look or ask. Oh, and I think they still offer a 10% discount to Northwestern students with ID.