Materials and findings

I seem to be getting a lot of questions about where I get my materials for my goggles--not here, as I'm getting no traffic on my neglected blog, but I'm getting emails and hits over on my deviantart page, on brass goggles and through my etsy. I figure it may be wise to just answer in one fell swoop here, rather than retyping an answer.
I will say one thing: I have spent a lot of time specing out sources and will continue to do so. If I'm a little oblique on one or two points, it's because I did a lot of legwork and choose to play some cards close to my vest.
Leather:
My leather comes from two main sources. I shop at Tandy, which has stores across the US, as well as a website, http://www.tandyleatherfactory.com/ I've found the Tandy close to Harrisburg to be fairly impersonal and difficult to shop, but the one in the Lehigh Valley to be much better shopping if more poorly stocked in actual leather.
I also shop at a fabric store near Harrisburg called PA Fabric Outlet, which sells hides with defects for a slight discount. It's thanks to this that I can keep my prices lower, and I'm just careful to cut around any discoloration, holes, etc in the leather.
Buckles, rings, hardware, etc
I love PA Fabric Outlet for this as well, although their stock is sometimes touch and go. It's one of the few places where you can buy just one D ring. I find Tandy to be overpriced, unless you are buying in a large bulk. I've bought a bulk online as well from Ebay, but that site in general makes me wary because I've gotten burned on a few transactions (very common in the crafts section)
Hobby shops occasionally have rings, buckles and connectors sitting around, although I avoid chain hobby stores. Privately owned stores are much better for bizarre selection--I make us stop when we pass anything on road trips.
I also make a point to stop at small mom and pop hardware stores (the grimier and older looking the better) as they tend to have strange brass bits with unknown purpose lying around in cardboard boxes. At a flea market, I found some brass triangles that were far too lightweight to be horse ties. In other words, some of the more interesting pieces are just a matter of keeping your eyes open.
The ultimate idea though is that it's possible make almost anything out of brass yourself--my dad is a genius for figuring things out. He has a jig worked out for the eye piece rings that fit my lenses.
Decorations
A combination of flea markets, online, and prying things off of other broken old things.
Lenses
I debated originally making lenses from glasses, but opted against it for one reason. Goggles spend a heck of a lot of time dangling from people's necks and I worried a lot about them bumping against things and cracking. Because of this, I use acryllic for the lenses, which I cut myself.

All in all, I spend hours of legwork before a piece even starts to be constructed, it makes each of my pieces unique.