PROJECT LINUS     Purls Tucson is a drop-off point for Project Linus Blankets. Just drop them off in the basket in the nook.   HATS FOR THE HOMELESS!   The Salavation Army's Hospitality House, their only homeless shelter, is requesting knitted hats for adults and children of all ages. Their residents are required to leave the shelter daily from 7:30 a.m. to 3:00 p.m., being exposed to the cold during the winter.   Once completed, please place the knitted hats in the red bag, in our nook, for pick-up.   Thank you for your generosity.     CAPS FOR KIDS   Bring in a knitted or crocheted cap (or sweater, or booties) and receive 10% off your next purchase.   Free cap patterns, both knit and crochet, are available at Purls Tucson.