Back in 2010, I made the easiest coasters I have ever made. 5 pieces of fabric was all it took.
http://www.allsorts.typepad.com/allsorts/2006/11/crisscross_coas.html
I have branched out since then and now make potholders of various sizes. This is what I did for the potholders.
I used two layers of Insul-bright, the shiny side towards the outside on both sides.
I cut the 5 squares, one for the back, 4 for the front -- 8 inches. I cut the Insul-bright the same size. Then just follow the directions.
Two layers of Insul-bright, the backing -- facing towards you and then the four criss-cross fabrics. They each get two of these.
I made smaller ones for taking hot things out of the microwave. Only one each of these. These were cut 5" and have two layers of the Insul-bright also
and then they each get a coaster. No buttons on these!!
These are their favourite colours and apparently their new digs are an off white, so it will definitely add colour.
I sat on the deck on a beautiful Sunday sewing these together. This was my first time this summer I've made myself get out there and just sew. It felt great.