I recently ran a workshop on using the Gelli plates and prepared various samples for the class to demonstrate the techniques used and effects that could be obtained. Of course, rollers need cleaning between each print to prevent the paint drying on them, with often disastrous results. But instead of cleaning off the paint with a rag I keep a sketchbook next to me and roll off the excess paint onto a page.
These are a few examples of the pages created by cleaning off the rollers.
I was pleased with the results and might use the pages as backgrounds to other artwork. Or I might just enjoy looking at the abstract patterns and the colours.