I have some hot pads my Grandma crocheted over bottle caps many years ago. I found this site and got the idea of making a yo-yo over a bottle cap instead of crochet. I think you could use the warm and natural to line the yo-yo and then add the bottle cap just before you close it up. Sew a few together and then you would have your hot pad.
Grandma made some that looked like a bunch of grapes and some that were sunflowers.
It would be another way to use up scraps. What do you all think of this idea?