It's probably a coincidence, but following Friday's migraine-aura-neurotransmitter-cascade-hangover-hormonally-induced-brainstorm*, my brain shifted gears.
It's 3D modeling software, available on terms that ought to raise more of a red flag than it did: "Free From Google."
But I decided what the hey. This software is really pretty cool. And free. So what if Google can somehow use a plan of my house in its nefarious bid to take over the world?
It took me a few hours to get the hang of Sketchup, and then I started building.