Have you tried these great mylar stencils created by the talented MaryBeth Shaw? They are great to work with. They measure 9" x 12" which make them especially nice when working in a larger format. How about using "Gears" above in your journal, on canvas or paper?
The three pictured in this post have all been used with paint, glaze, ink, sponge and I even did some tracing using the "RiverRocks" pictured below and "Trees" above was perfect in a background. These are high quality and super easy to work with as well as clean. You won't be disappointed.
You can see some gorgeous artwork that MaryBeth has created using her wonderful stencils here.
If you have art work created using MaryBeth's great stencils, please feel free to leave a comment with a link to showcase your work.