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.
This is insanely clever and I imagine loads of fun! Who does not like popping bubble wrap first off, and then add paint = deal! - Bubble Wrap Stomp Painting - make some bubble wrap "boots" then dip in paint and stomp around to create art!