What a wonderful idea: to batik reasonably priced with children without getting it dangerous for the little ones she simply uses washable (school) glue!
And what children can do, I can, too.
Very often ;-)))
By the way, she uses watered down acrylic colours to colour everything in.
Great!
Links:
No-wax Batik (How to do Batik with Kids)
via: Gel Glue Batik
Google search result for ‘Washable Glue’
Google search result for ‘auswaschbarer Kleber’