This Clothing 'Quick Clip' is designed to attach to any clothing via the use of M3 screws, to attach to the jacket pictured I used 6mm Pan Head M3 Screws.
The full 'Quick Clip' collection - https://www.thingiverse.com/mikeevans991/collections/quick-clip
My filament cost for this Quick Clip is less than £0.28!!
Please leave a comment and upload your makes if you do decide to use it.
Tips are very much appreciated also :)