Feather Linux Fits On A USB Key

freshmeat.net: Project details for Feather Linux
Feather Linux is a Linux distribution based on Knoppix 3.4 that can fit on a Mini-CD or on a 128 MB USB pen drive. It aims to have a wide range of applications for desktop, rescue, and administration uses.

The boys may want to take a look at this as they prepare CALIoppix 2.