Walker Art Center Shops BLU DOT DESIGN Letter holder, $22 ($19.80 Walker members). Desktop 25 CD holder, $22 ($19.80 Walker members). AFFORDABLE DESIGN FROM MINNEAPOLIS-BASED BLU DOT 2D:3D Series--from flat to fold without tools. photos: Mike Parker ART DU JOUR AT THE GALLERIA SHOP Thursday, October 14, 1999, 6-9 pm Minneapolis-based artist Sheryl Douglas of Artificial will show her new line of limited-edition mobiles, available exclusively in the Walker Art Center Shops. TWO CONVENIENT LOCATIONS                                             MUSEUM SHOP 612.375.7633 Vineland Place at Lyndale Avenue South, Minneapolis Tuesday-Saturday, 10 am-8 pm Sunday, 11 am-5 pm Closed Monday GALLERIA SHOP 612.928.9690 69th and France, Edina Monday-Friday, 10 am-9 pm Saturday, 10 am-6 pm Sunday, 12 noon-5 pm