I have used the blink(1) in a couple of toy projects (one using the datapoint API that I keep writing about but they don't show off its true prettiness, so I thought I'd share the command I use when I want pretty. The code is on GitHub and compiled on my linux system with no fuss.
sudo commandline/blink1-tool -t 3000 --random 2000
This produces something like:
It's hardly hardware hacking but it's certainly brightening up my office! Have you got a blink(1)? What will you do with yours?