I definetly would not use the poly! Will have a burn before you can say scat! Ask me how I know!! If scraps of the poly is what you want to use up, I would make coasters with them. Just need 4½" squares to make a good, adequate size coaster. I will try to post a link of a pattern I use for these. They are really good for personal use, and as gift giving, great for a quick hostess gift.
http://quiltbug.com/Articles/quick-gifts.htm Scroll down to Crisscross coasters.
I hope this works as I am not computer savy! Anyway, I do not use the fusible web, I just cut the poly same size as the other squares and use it. That way I use up all the small pieces that I could not otherwise be using.