Each image, would have a spiritual message. When you do a bit of thinking, looking upward, to see the magnificent cloud formations, and more, it may not take much to think-spiritual.
As a kid myself, growing up in "a little red house"; I was not able to have such great images on my room walls, nor at the churches I attended!
The image choices presented to you are those that you as a teacher in children's church and other church members, may be curious of. They may also be eager to make a comment about!
Basically, you may think of either of the particular images as "an opening for a biblical story" to tell to your class.
In the case of your child being very much curious as to what the image is, in your own manner, think of allowing your child being able to get a laugh or two as you quiz them on what the image actually is!
Thanks, Jimmie Baker, M.S.B., A.A.A., and others