WHILE WE SADLY bid adieu to a fave gift shop in the neighborhood, we can still treat our pains at another local hot spot. Dtox Day Spa, 3206 Los Feliz Blvd., is celebrating its third anniversary. Save a receipt from a treatment in August, get $20 coupon for September. And the spa's Happy Hour Friday is Aug. 21, this time a detox/retox partnership with Bigfoot Lodge across the street. Soak it in, just like Lorelai Gilmore!