This trick has many options….
You can produce a present for a birthday child.
Draw a dove. After you’ve show both sides of the banner, grab a rag to erase it, but instead slip it inside the folds of the banner, pull the top and bottom of the banner apart and a dove flies up and out.
It also makes a great educational reinforcement tool as well. Imagine promoting a reading program where you have the title of a book written only to produce that book. Or perhaps a gospel message where you need to reinforce a scripture verse by producing relative items from the banner.