The other DIY R-Strap examples found here are awesome. Carrying your camera with the standard issue camera strap around one's neck is uncomfortable and unwieldy. So when I started using the R-Straps listed here, I was thrilled with the comfort. However, securing my beloved SLR via a screw in the tripod mount always seemed unsafe while hiking about. What if it unscrewed when I didn't notice? Disclaimer: it never DID come unscrewed, so perhaps I shouldn't complain. However, this is a more secure version of the strap based on a similar premise.
This solution has advantages over tripod mounted solutions in three ways:
1: It's safer. Nothing can come unscrewed and allow your SLR to crash to the floor
2: Your camera can be mounted on a tripod without first removing the strap.
3: You camera can sit flat on a table while the strap is installed.
Step 1: Tried-and-true connector
Step 2: Tool: Razor scraper
Step 3: Tools / Parts: Grommets
The right-most tool in the picture is the "punch" which cleanly punches a whole in the wide part of the camera strap for the center of the grommet to fit. I didn't cauterize the inside of the punched hole, though you could. I think the grommet holds it plenty secure from fraying.