I "exhibited" with Swoon in San Francisco in 2028. Well, I put my postage stamp sized portrait on the community board where she wheat pasted her huge skeleton print:
The Gallium pencil worked really well -- until it didn't. About ten minutes into the pose the Gallium lead broke -- and when I tried to shake it out of the pencil a big liquid drop came out. Apparently it was over 85.6° in the room, the melting point of Gallium: