Maybe craft aid. It's a raised plastic design. Thousands to choose from. Basically you placed the raised side down on the wet leather and rub the impression into the leather. This gives you the pattern to follow for cuts and tooling. Is that what you had in mind?
Yeah. I have sheath knives with the same strap system. You just need to be careful when you pull them out. In over 35 years of using that kind of system I've never had an issue
1st gotta say I love your work!
As to pricing I'd agree with the 6 to 700 range as a minimum. That bag in the right place I could see going for a grand.