I've been meaning to share an art project I did with my 6th graders a few weeks ago. I found it at this website. I needed plenty of school glue and lots of salt.
Then they carefully brought the paper to the salt table. There, we liberally shook salt onto the glue until it was well covered. Then we firmly tapped the residual salt away, into a big bin.
One student who had a momentary spelling lapse, did this one: