So for my campaign we've been using Legos instead of miniatures for a few reasons, but mostly bang for the buck, as we can more easily reuse pieces for different scenes. Plus it lets me buy legos, which for a 30-something childless man is a good thing.
Anyway, I've whipped up some ships for this week's game, and I thought I'd post them. I'm pretty happy with them, except maybe the colors.
Aconite-class Eldar frigate
Vagabond-class merchant trader
Sword-class Frigate (with lance, so I guess it's more Firestorm)
The last one is the player ship, so I might change that a bit as I get new parts.