Ink that can vanish and reappear? It must be witchcraft! See it (or don't) with your own eyes thanks to the Set of 3 Erasable Gel Pens - The Boo Crew from Legami. Give a new meaning to ghost-writing, and don't worry about making mistakes in your notes: the thermosensitive ink can be erased using the rounded tip. Refillable, colourful, and so cool it's spine-chilling!