One option, of course, is to use one of the cups we already own and use a plastic bag. But then we'd have no fun project. So I sought out a new cup that might even be fun. No such luck. Due to my plastic aversion, there aren't too many cup options. We already own stainless steel tumblers, but when I saw a stainless steel mini mug with double wall construction, I decided that would be a better option for us. And after carrying bin after after bin of fabric when relocating my fabric stash, I knew I wanted to use up some of the PUL from diaper making days.
The little bag was super easy. I had a 7" zipper on hand and the PUL. I utilized a small bit of cotton at the ends of the zipper.
For the mug, I read a bit about using paint or permenant marker on stainless steel. I wasn't sure what might stick. Finally I saw nail polish mentioned and thought that was worth a try. I wanted to write her name fancy, but my painting skills are not the same caliber as my sewing skills. After some test runs, I settled on a flower and added sparkle nail polish as the final coat. I did write her name on the bottom with more nail polish. I hope it all washes well!