In 10 seconds, all the kids basically did the same thing, clarifying what the sketch most obviously represented. In 10 minutes, however, the kids' creativity came out, with time to imagine and develop an idea, transforming the starting sketch into a variety of things.
It was an interesting little experiment, so I decided to see what Kate would do with a similar task. I drew a simple, black trapezoid on paper and set the microwave timer for 10 seconds.
She turned it on its side and declared it a door, adding a doorknob and some color.
She colored it and a couple other things, making what appears to be a collection of lamps that remind me of Ruby Tuesday.