A little more progress on the Up house...
First, I added some floor “joists” and pipes using scrap wood pieces, plastic sprues, and pieces of metal coat hanger.
Here the pipes are lightly weathered:
I also added some electrical/water meter boxes to the side of the house, as per prototype (or close enough, anyway):
Finally, I reinstalled the now blue balloons and formed the balloon bunches into a single bouquet of 200 mini balloons:
200 balloons is far short of the thousands required, but at least gives the impression of the bottom portion of the balloon bunch:
More to come!