Note, there's an version located here:
https://makerworld.com/en/models/154068#profileId-168380

I've tried a lot of different clips and have not been entirely happy with them so I decided to implement a new design of my own. I put a lot of thought into it and made many prototypes before getting to version 1.0 Here are the features I designed into this clip:

• 2 printed springs hold filament firmly and reliably
• Holds all filament types including TPU and can be used with all spool types
• Does not kink or damage the filament in any way
• Low profile, so when it's on a full spool and stored in a box it's not easily knocked off
• Prints without supports (all overhangs are at most 45deg)
• Prints with less than 1g of filament
• Printed successfully with PLA and PETG

If you try this clip and it does not work for you, please let me know why and I'll see if I can make improvements.