I print my hexies (1 inch on flat side) on regular computer printer paper.
I have never been happy with just a stitch at the folds to hold the fabric, so mine are actually basted to the paper. My quilt is just now covering a full-size mattress and I have left the papers in. Reason being it is keeping the seams flat and controlling the raveling.
I have been working on this for over three years and it is getting close to being finished. When it gets there you will see it.
It will probably take me as long to quilt as it is to piece :)