This is OUTSTANDING.
Free print-outs to make paper models, as well as origami print-outs.
All with instructions.
You don't need a Canon printer, just any printer, print out the pdf, fold along the lines, and voila, a mega-cool paper model.
Will keep you/the kids busy for HOURS.
Note: link updated to main Canon Creative Park site. Other content on the Creative Park site is: greetings cards (http://cp.c-ij.com/english/greetings/index.html), scrapbooks (http://cp.c-ij.com/english/scrapbook/index.html), 3d decoupage (http://cp.c-ij.com/english/art/index.html), and calendars (http://cp.c-ij.com/english/calendar/2008/index.html)
In order to make the 3d art, the recommended paper is matte 170g paper (you need paper that is somewhat stiff).
For the origami, you just need plain paper (recommended weight 90g).
You will need your printer, paper, scissors, and for the 3d art, glue.