For that difficult backpack buckle for Backpack #1, I drew out the shape of the buckle in MS Paint (don't hate, wanted to do it quickly lol), and then I uploaded that shape into AI to create a photo real model. Tried to use that to reverse image look up visual matches, but couldn't find anything. I'm trying to train it to find a similar buckle, but need help. I uploaded the MS Paint variations, and the photo real AI buckles. Please let me know if you guys think it's the 1 bar or the 2 bar variation (can't really tell in reference photos):
I'm doing this to source the buckle at first - to rule out the custom CNC job lol.