Tim walked about and murmured to himself about stuff.
Rio was outside, surely fixing up her house project.
"Yes. I finally have the front door room. Not quite the living room."
She looked around and looked at all the stuff Tim helped with. It was like looking at a blueprint / 3D Pen & Ink model.
from a distance, it was invisible, but up close, you could see what the house is supposed to look like.