A machine isn't needed which gives it good potential for a kids' class. I have no desire to work with a roomful of 8-10 year olds and sewing machines. The potential for disaster is too high.
I used the large Clover yo-yo maker and hand sewed all of them onto a shirt purchased from Target. (The link will take you to more project ideas from Clover.)
Now we just need last week's warm weather to return so Ellie can wear it.