So my wife has started posting some children's capes on Etsy. She made a bunch for a super-hero themed party we put on for the kiddos, and she thought "Hey. Maybe others would like these". Turns out she was right, and she's sold a few hundred in the last few weeks. The apartment is pretty much covered in satin and felt.
I know some of you folks have young kids, or know others who do. I'll link to her facebook page where she does a lot of orders from and has posted plenty of pictures.
The capes are durable, and very cheaply priced. You can also add on a matching felt mask for about a dollar. They are customizable, so if you don't see a logo you want you can always work with my wife on finding/creating the right one.