If you are anxiously awaiting the weekend game giveaway, or just bored at work .. check out some old-made-new ways to pass your time and flex your creativity. It's a great way to impress the kids/grandkids/coworkers, too; the artwork is ingenious.
And speaking of artwork, most of these sites are looking for artists... if you need extra publicity/cash, why not give it a try?
Papercraft Pinhole Camera: http://pro.corbis.com/creative/readycam/
Flying Pig: http://www.flying-pig.co.uk/ (you can make animated paper creations!)
Paper Forest: http://www.paperforest.blogspot.com/ (check out the dollhouse!)
Speaker Dog: http://www.bentheillustrator.com/speakerdog.html
Cube Craft: http://home.comcast.net/~kymcat3/index.html
Web Dude Paper Craft: http://www.paperian.com/webdude/wr03.htm (especially the wacky races models)
Bit Strips: http://www.bitstrips.com/ (design your very own comic strip)
Blue Sky Studios Challenge: http://bsschallenge.blogspot.com/
Hey Wink: Howl's Moving Castle: http://heywink.com/files/hmc_pc.pdf
Translation to English Instructions: http://rose-rote.hp.infoseek.co.jp/miya/howl/pc/howl-pc2.htm
Original site: http://www.heywink.com/wordpress/
Moleskine Project: http://moleskineproject.com/ (draw and submit your own doodle)