Here’s a design option you may not have thought of: stencils designed on the iPad using the Amaziograph app. These lacy stencils are really hot right now in the cardmaking world. Using the right symmetry options in Amaziograph, I designed the stencils in the pen width I thought would work well as a stencil. Then pulled the .png into Illustrator and autotraced using the Technical Drawing preset, which created the cut lines. And voila! (Cut from 10 mil Mylar)
Here’s the original png files: