I was perusing marthastewart.com for craft ideas, and came across these adorable heart potholders. The step-by-step tutorial looks pretty thorough (what else do you expect from MS?), though they don't mention a specific type of batting, nor is there any quilting involved. I'll use my cotton batting, because common sense tells me that a polyester blend will melt and plasticize with heat. I can't wait to make a few!