Later during other quiet work times, I called them over and put their words into the Wordle program. They got to choose the image they wanted. If you have limited colored ink available, you may have to specify that black backgrounds cannot be chosen.
Once an image is selected, you can choose to print it. On my computer, this allows me to choose a pdf option. I save all the images as pdf and then I put them in a word processing document. I put 2 on each page and then cut them to size when they are printed.
If you have access to a lab and are able to do all of them at the same time, this will speed up the process.