So as a summer project, while I don't have uni and I need something to do when work becomes nuts, I figured I'd start making a Senbazuru.
It's 1000 paper cranes, arranged into 25 strings of 40 cranes each. When a 1000 are made, it is believed to be lucky.
This explains it better.
When I'm done, I might post it up on CS.com so I can show you my efforts. I'm a bit over halfway on my first string.