Materialiser Shoes - by Philip Boulain. The briefcase ghost materialiser in the 'Music' episode made me realise that, by 2000, it would probably be feasible to integrate a materialiser into footwear. Materialiser shoes would provide a way for ghosts to have a truly mobile visual presence - using telekinesis to keep the shoe positioned on their feet, they could return to the active life they had before they died. As a safety precaution, the shoe includes a built-in Tesla coil which can be remotely triggered in the event of naughty spirits.