I am having trouble finding a local store in my area that has something along the line of a cinch buckle or rings to be used in a support system for my hammock.

There has to be something out there locally that can hold enough weight. Not all the weight would be on the ring or cinch buckle, but most would be on the webbing around the tree, right?

The closest I've found was this, but just a tad spendy:

I know I know, you can purchase these everywhere online. My camping trips are irregular like my schedule so I don't want to buy something then go on a 2 day trip in the snow without them... Don't bother to show me websites cause I know those ones thanks. I just need something local gosh darn it.