Magnetic Fabric Letter Coasters

Washable, expressive coasters that store on the fridge.
I hadn't seen these anywhere and I'm working on perfecting them for my shop, so here is a sneak preview.
I drew up a polygonal font and I'm using a really odd but workable interfacing. Altogether, the drafts came out really well. All I need to do is affix the magnets so they don't move around inside the coaster.