MOST RECENT PURCHASE...
I was at Gen Con and bought the Numenera GameMaster Mat, its essentially a playmate and a GameMaster Screen. Its a brilliant idea and its useful if you use the card elements of the Cypher System.
I can't recommend it enough.
(At the same moment I also purchased MCG's Numenera and The Strange Dice Sets and the Numenera Intrusion Deck and Weird Deck).