I agree with Tartan about the insulbrite as the batting. I think the oilcloth would be too much. You can use any circle pattern for a mug rug for the topper. You might also want to make a cup hugger that wraps around the mug & helps retain heat/protects fingers. You can just use a cardboard from take out coffee for the pattern, or search on Fave Quilts for a link with a pattern. Then you can use fabrics that relate to the person for which the gift is made. I just made a mug wrapper using Red Wings fabric for my DSIL for his birthday. He's a big coffee drinker and I don't think he'd be interested in a mug rug, but this is one thing I think he'll use. Best part? You just need to use scraps & it's a quick project! Cut, piece, & finish? Less than an hour!!