DIY PCB transfer media

I didn't have any vinyl laying around, but I had CON-TACT brand "self adhesive decorative covering" so I tried that out, with low expectations. After shoving it through the printer (not a fun experience) I ironed it on max heat like I do with photo paper. The paper came off easily under warm water but some toner stayed on the paper (mostly on the edges, forgot to take a picture). The finish looked a bit rough and I was worried that I had microscopic holes all over, (like I'd heard about elsewhere) so I etched part of it. No microscopic holes as you can see. The distance between traces in the red circle is less than .2 mm, I had no problems with the paper sticking there.