These Clover Mini Wonder Clips are great!!.
We use them on many different type projects. The clip is small and strong, but opens wide and has a very firm grip. The clip base is flat for easy feeding to the presser foot. They also have a guide scale.
Our 50 piece set is in Rainbow and comes in a handy little plastic box with dividers. Too cute. I have a set for my studio and one for my travel bag.