Hey, Sandisk-distros are all the rage nowadays! Check out my system, TTY-Opener!
In a nutshell, TTY-Opener is a text-based "emergency" OS for the i-o's Sandisk. Basically, it's a simple OS to keep on the Sandisk to help you out in a pinch. Because it's so small, it's dead-simple to modify (flat ext2 filesystem) and you still have almost half the Sandisk for your own customizations.
Based on the mini-distro ttylinux, you get lotsa goodies in a small space: links web browser, dial-up support for the modem, dhcpd (if you enable it), lotsa USB device support, telnet & ssh clients, dos, ext2 & rieserfs support, telnet & http demons, gpm mouse, NFS, mpg123, gnu tar & afio, tons of busybox commands and lots more. Now how much would you pay? Yeah, I know, nuthin', ya cheapskates. :)
If you are looking for a jailbait (graphical) alternative, you are probably better off checking out Ingo's M4I. It's great!
This is one of things that I needed, and thought I would polish-up and release. Hope someone enjoys it.