Well... I can't help you with the carving SET, but I can refer you to a
pumpkin-carving SITE that has LotR patterns (select "patterns" from the left-side menu). They are highly difficult to do as they are "shading" carvings, but the site gives easy instructions (select "instructions") as to how one performs this miracle of Jack O' Lanterning and even how to create your own patterns using the computer.