Over on Instagram, Chris Hall demonstrates drawing on a lab coat with AxiDraw for his costume:

Putting #axidraw to work on my Doc Brown costume so I can show these kids OG Rick . . . . . #diycostume #inktober #rickandmorty #backtothefuture

A post shared by Hard Work Party (@hardworkparty) on Oct 27, 2017 at 10:48am PDT