Most people refer to it as a clothes pin; in Hollywood it’s referred to as a C-47. They were named that way because back in the day there were 47 pins in a pack. The C stands for clamp, hence C-47.
We’ll take them and reverse the way they clamp so that they have more of a pinch tip to grab stuff better:
I like using these economical tools for clamping gels to lights and softboxes. Jo-Ann Fabric and Craft stores sells them in different sizes and colors. 
I like using the medium clamps to secure gels inside small to medium softboxes:
The large clamps are great for securing gels onto grids on softboxes:
This is just one of many ways standard household items can come in handy on a photo shoot.
I hope you enjoyed this tip, look out for more. Thanks for giving me your time.
That’s a wrap, fade to black.
