What a great question! I am assuming that this portfolio is to aid you in showcasing your talents in the hopes of securing work of some kind. If that is the case, then I would recommend focusing less on the technologies being used and more on generating interest and intrigue.
Keep in mind: tools are just tools. Everything in IT is ephemeral and imperfect--it will all be replaced soon enough and yesterday's code, so to speak, always ends up looking kinda gross, in retrospect. The technologies used are really only important to the extent that they prove your ability to continually learn new stuff and develop yourself as a person and technologist. There will certainly be something new out tomorrow that no one has much experience with.
My advice: Develop something that reflects you and your unique point of view. Give them a sense of who you are before you even hit the door. If you can create something that demonstrates range as a technologist, all the better. If you can create something that is actually hosted on the Interwebs, connected to a database, services actual human beings, etc., well, then that's ideal!
In the end, portfolios, resumes, etc., are really all about getting your foot in the door. Getting that interview, so that you can ultimately sell yourself. It has been proven time and time again, that people will hire less qualified people that they like and want to work with, so I would just keep that in mind. In the end, people hire people, not a collection of acronyms in bullet-point form. Above all, be you and remember that an interview goes both ways...
I hope that gives you some food for thought. Good luck and all the best!