Supplies for Gelli Plate Printing: I usually purchase my supplies from Dick Blick because they are on the NYS Bid. If you go under printmaking , you can get the gelli plates , rollers and barens. You will also need acrylic paint, Golden open acrylics are the best since they dry slowly. Martha Stewart craft paint is also supposed to be good, it can be purchased at Michaels or online.
As for paper, Block printing papers work fine for student work, artists use rice paper. Students can use a variety of objects around the house to make images on their prints from leaves , to doilies, plastic forks ,crushed wax paper , feathers , yarn, grass, etc.