Artist: used bottle caps to make a self portrait. the way in which the human mind can conceive of such things is astonishing in and of itself
Artist Stephen Kettle making sculptures out of slate stone. The following is of Alan Turning.
Shout out to Holy-Crackers.tumblr.com: a sculpture vividly displaying all the boards that can be cut from just one single log.
Artist Maskull Lasserre (http://maskulllasserre.com/home.html), carved up newpapers, computer manuals, wood...
Buy them here: http://www.folksy.com/items/1979373-Crayon-Lego-Men-Set-of-8