Castrum Libertaris... Castrum of Liberty.
The warrior of light turning his or her house to resemble a Garlean Castrum.
With a whole bunch of Garlean equipment to place inside and outside the house - including laser doors, cold metal walls, CCTV cameras, sentry lights, even Maggie game that is similar to Air Force in Golden Saucer but you ride Maggie and shoot Garleans with a VR headset when you use it.

Plenty of things to add here of course.