Well, here is my idea. Using the objects for storage. These are some of the sketches in my mind.
First, space theme. Why cant we store some candies, like M&Ms, into the Rocket, UFO or meteor?
Second, the owl and the birdhouse. A nice place to store jewels, and why not, to convert a wristwatch to a wall clock.
The owl's eyes is a perfect place to put rings
Third, the city theme. Ohh, a catastrophe. Don't worry, we still can use these wagons to store some crayons.
I hope you like my sketches, and would be pretty nice some feedback.
Thanks and good luck!