I just recently toyed with the idea of using a WYSE VX0 model WinTerm which operates on a Embedded XP OS.  WYSE as they have it, allows for downloading and flashing the drive with a fresh, factory default Windows OS that is free...

As it turns out, WYSE (and some others) have these thin clients that also are designed for Linux based OS. 

These things are cool as they have the older RS232 Serial ports, along with a parellel port, USB, CAT and also an optical drive port. 

Not to mention that they are in the 20 buck range for the used ones on EPAY...

I am using my WinTerm to run Ham Radio Deluxe as a standalone remote, these things are small and can be placed anywhere..

My thoughts are, these might be the perfect "mini" OS to run ether a Linux-based MESH node, or as a accessory to a MESH router. Ether way, you can't go wrong experimenting with one for 20 bucks...

The flash ROM OS is pretty cool too!

Gary KI4WPI