In November, in preparation for our Craft Social, I tried freezer paper stenciling for the first time. I didn't experiment with many fabrics so I can't say whether my less-than-perfect results were due to the fabric type or due to my tendency to apply too much paint. Maybe both.
Above are bags we gave to our kids' cousins for Christmas. My kids helped choose the images and paint colors, but I did the cutting, ironing and painting.
Also above is a bag I made for my sister. We're Seinfeld fans so I painted on a quote that I thought would be funny when remembering the context and appropriate for grocery shopping (although I don't know if she uses it in that capacity or not). It was fun to make but definitely tedious in cutting all those letters. I probably should have re-ironed it before taking a picture.
If you've never tried freezer paper stenciling but would like to, here's a tutorial to get you started. I would just advise that you use a pretty smooth fabric and enough paint to fill out your stencil without over applying it. Maybe a onesie with a stenciled shamrock is in order for St. Patrick's Day? Everything's cuter on onesies.