Well I didn't find any template plastic last week but what I did find instead worked perfectly for making my templates!
Plastic dividers that you normally put inside of binders! It's thick, clear plastic that is easy to draw on (I used a Sharpie) and cut out, and the best part is that you get 8 sheets in one package. I spent $3.88 on this pack and there were other options that were cheaper, although not as thick.
I spent a night tracing and cutting while watching TV and it was much less painful than I expected. Last night I cut two of each fabric (I am planning on switching up the order of the fabrics to add all 36 into my final quilt).