Avahi and dependencies, with a configuration that would advertise the shared USB printer, Tomato's Admin webif, and any other services (like Transmission BT client, etc.) would be nice.
I've started a writeup in the General section to try to hash out ideas and give a voice to the idea.
Avahi for advertising router's services to rest of network & clients
Various Broadcom Routers Running TomatoUSB (or DD-WRT) with Airprint & Cloud Print
See my Repo's at http://github.com/davygravy
Extra/Newer Optware ipks not in the dd-wrt/nslu2 feed
davy's 1-wire weather, courtesy of TomatoUSB, Optware & Maxi