#RPGaDAY2015 – Day 14 – Favorite RPG Accessory: mechanical pen?

#RPGaDAY2015 – Day 14 – Favorite RPG Accessory: mechanical pen? paper? notebook? computer? tablet? fountain pen? dice? software? headphones with microphone? table and chairs? bluetooth speaker? glass counters? felt tip pen? sorry, I just don't have a favorite one.