How to make ugly interesting

(Without using black paint)

Tonight after work, the Manager of the local toy shop picked up the houses they're going to use in their Lundby window display. But the window dresser isn't coming until late tomorrow afternoon.

What to do? Leave a pile of ugly looking boxes and empty houses in the window or whip together a "work in progress watch this space" pop-up display?

We chose the latter, of course. It was great fun and we think it looks fabulous...
(Before you ask, the Union Jack is left over from their last display)