Make charcoal from redwoods. Then make black powder from that.
Then dust a plastic surface with the meal powder in John Muir's portrait.
Then fire it up.

The plastic is the deliverable.

(With acknowledgements to the los alamos folks who make art with bristant explosives
and metal plates, using the Monroe effect, see
http://www.intdetsymp.org/detsymp2002/PaperSubmit/FinalManuscript/pdf/DavisHill-52.pdf



)