New York: If you want to brave the crowds in the MPD, there is a new club opening:  Griffin.  Doors are unmarked, but perhaps worth scouting, as this is brought to you by the team from Milk & Honey 50 Gansevoort St. L.A.: Celebrate the Kentucky Derby weekend with $5 Mint Juleps at Comme Ca 8479 Melrose Ave (E. of La Cienega), West Hollywood, 323-782-1104  The Unique Los Angeles Design & Gift Show is going on this weekend California Market Center Penthouse, 110 E. Ninth St., at S. Main St., Downtown  OR head over to the newly expanded east side craft center, now Sew L.A.  1637½ Silver Lake Boulevard, between Effie Street and Berkeley Avenue, second floor, Silver Lake. 323-665-7097