Eminem is selling pieces of wood and brick from his childhood house as collectible items to honor the 16th anniversary of his Marshall Mathers LP.   The materials were recovered the rap star’s old home in 2013 when the building was demolished after being found structurally unsound. They are being sold at Eminem’s official website with packages including a cassette re-release of the 2000 album with a 3-D motion-printed cover. The bricks are limited to 700 and come in a plexiglass enclosure with a commemorative plaque on the side. The wood has been re-purposed into dog tags that come in a handmade, custom-etched box modeled after that house at 19964…