I bought some thermal batting and I think it wasn't very good, as the potholder I made and used didn't work well. Burned my fingers! Have more to make and think I will look for the other batting mentioned here.
I think the table topper idea sounds good - or as hot pads. The larger size for the hot pads would be great - mine are all smaller than 15" and are really too small.
You still amaze me Karla!!!
P.S. Didn't see your post about the hot pads being too large at 15" until I posted this. Still think that size would be great for a big casserole dish!