Corran is a must
A Yuuzhan Vong would be cool too (if you can make their lightsaber an amphistick that would be just incredible)
""Ideas are really everywhere. A writer has to train him or herself to look at everything they see or hear with an eye toward "how can I use this, how does this fit with other ideas I've had." There are no lack of ideas. It's not a particular skill to come up with these ideas. The ideas are the easy part. It's taking the ideas and developing them into English that is the work aspect."
- Timothy Zahn