Well I got a NIS and NFS PET in the works right now. I just got some troubleshooting to do.
Another I plan on doing is a Squid PET. I am eventually going to ditch my RT311 router and have my Spaten.schotty.net server do the NIS and routing. As I finish they will be submitted. I can volunteer to write anything else that may fall in this category as well (net sharing based on login, etc.)