Topic choice

I've been debating for the last couple of days what emerging technology topic I should choose for assignment #4.  I did a similar paper for MLIS 7550, and my topic for that paper was text message reference, so I didn't want to choose anything too similar to that.  I considered 3D printing, because I'm still very intrigued about it.  I also considered Google Glass briefly, because I wasn't familiar with that at all and I thought it might be good to learn about something new.  Earlier today I thought I would choose screencasting, but now I'm leaning towards writing about digital media labs in public libraries.  I've found a few sources, so hopefully I can learn something and put a good paper together.