I thought about something like that as well. I think there is a lot of things you could do. I'd try to think of what would go best with the blaster lore wise. Maybe there is lots of different star wars blasters you could look at to find the most appropriate design. Whatever you do, I look forward to seeing it.
Also, I would make sure to install SSD's not old school 7200rpm platter drives. I would only use platter drives for cheap mass storage, you'll want SSD for your OS, programs and main working file storage. Otherwise you're crippling your system anytime it goes to read/write from the hardrive(s).