Strap Nylon Strap

I want to secure nylon strapping together, the material commonly used for dog collars and leashes the easiest way possible, yet the application has to be very strong. I have thus far found rivets would be a very strong way to do it, yet I do not know what kind of tools I would need especially the material is rather heavy duty.

Sewing is too difficult as it is not recommended for my sewing machine and the design would be difficult to do with a sewing machine. Hand sewing does not seem to have enough strength.

What kind of rivets and how would they attach. I really want the fasteners to be very quick, easy and strong to do since there are many I will need.