LUMEN Eye Protector & PlugA 3D-printed protector that snaps onto your LUMEN Eye to prevent it from turning on in your pocket or during transportation. We also include an emergency spare rubber plug/plunger to keep the ink sealed inside the pen if you lose your 'screw version cap'.
A cube matching trick. Spectator mixes cube under cover of a cloth and it matches your cube. Online instructions. Never used See Henry Harrius website for demo. Free shipping, contiguous US only.