What a fun project and specially kids love to finger knit.
At he blog from “I love to create” it’s very well explained how to finger knit with clear pictures. You can also learn how to make shirt yarn and how to tie and die.
When you don’t want to make your own shirt yarn, you can buy bundles of The shirt yarn in my Etsy shop or are at www.lvly.nl.
I also found a great Youtube tutorial, just click here