Here are some links that may help you with your Seminar 2 Final Project Proposals.

Previous Seminar 2 sites by Professor Rosenberg.

The best resource: The ePortfolio Encyclopedia. There are many more sites than just the featured ones. Click on All Sites to get a list.

There are also a number of archives here and here that are a compilation of all the seminars (so you will have to search out the Seminar 2 ones.

As far as tools are concerned, ITF Amanda Licastro has compiled a good starter list for thinking about the logistics of your final project.