The 'circle' template in 2Publish+ is a wonderful tool for children to use to combine images on a particular theme together in quite an unusual and creative way.
Today, for instance, I worked with our Year 4 class to produce rotational pictures (or 'wheels' as I prefer to call them) containing photos of Canada - a country they are currently studying about as part of a topic on nations of the Commonwealth. To begin, I got them to create a circle split into six segments and to add a label into each one of some place/geographical feature in the country from a list I provided (e.g. Ottawa, Toronto, Rocky Mountains etc.). Having done this, I then showed them how to do an image search on the Internet to find relevant photographs to copy and paste into the different segments. Finally, I let them use the fill tool to colour in the white spaces around each image and to change the font colour of each text box so that their wheels' appearances matched the colours on the Canadian flag.
As you can see, the wheels they produced look pretty good and all the children seemed to find the software intuitive to learn and simple to use to produce effective looking collages that I'm sure will look great on a display.