Remember folding up pieces of paper, cutting out diamond-shaped
holes in them, and then opening them up to reveal a snowflake, or
other symmetric pattern? Here's some art made by cutting things
out of paper:

http://www.petercallesen.com/index/A4PAPERCUT_000.htm

And here's another one, with a very different approach:

http://www.georgehart.com/kirigami/kirigami.html

Joyce