Painting with Watercolors, Glue and Salt. Kids will love being creative and making designs with the glue. The salt creates a pretty starburst effect by soaking up paint pigments as the painting dries. And as an extra bonus: the salt sparkles!
raised salt painting: create design with glue, cover glue with table salt. Touch watercolor brush on salt, without smearing and watch color be absorbed by salt. Let dry. This looks fantastic. So, inverted rock salt painting.
Elmer's Glue on Canvas, then paint the whole thing. I have totally done this, but with a hot glue gun. Elmer's Glue seems to be a better idea since hot glue leaves behind strings and is harder to work with.