Have you heard of Deli paper that's being used with the Gelli Plate? I got a box but haven't tried it with my Gelli Plate yet. I have, however, sprayed it with art sprays and let it blend together. After it dried, I used it as the background for this page. It feels like the tea bags I use, and is semi-transparent as well.
The humble buildings I sketched are my 'mark making' addition to the page. More on that in the near future.