The Wonder Clips are great alternative to pins, especially when working with heavy weight fabrics, piles, and vinyls. It can hold layered sections of sewing projects such as handle connectors to handbags and piping without distortion. It holds quilt binding while sewing and it's easy to see and easy to find when dropped on the floor. Works well with sergers.
The narrower ends of Mini Wonder Clips work well with miniature patchwork, doll clothes, and all work that requires holding pieces together in tight sections.