IMO, each of the following projects provide broad coverage of skills, from good Software Engg. to implementation difficulty. Most of them have something to do with servers, services and websites, but in varying degrees. Some of the projects have much to do with AMuDA Lab, just because I know of some requirements there :)
I wish to share foss.amritanet.edu with everyone who needs it, but that requires configuration which is beyond my skill level.
- Manager aka God