Some of the travel plastic soap holders will hold quite a few attachments. Some of the glass cases will hold most of the attachments. I have been finding triangular glass cases with hidden magnetic clasps. I've found three of them lately at the thrift store. If you have a ruffler they probably will not all fit in one, but most of the other attachments will fit,
Another possibility would be to make a small drawstring bag. I'm not sure what size. I know the Fashion Aids case had a drawstring bag for several of the attachments. I've thought of making one from silver cloth or flannel.
Janey - Neat people never make the exciting discoveries I do.