Can anyone tell me were to get large round frame glasses with the chain thing hanging down from them?

There's a place that does great custom work - just email them at info@replacementlensexpress.com and tell them what you're looking for, and your price range. Maybe attach a photo of them to give them a better idea of what you're looking for. Or just cut and paste this question into an email becuase it seems like you've put together a very thorough description! They're great at identifying frames and getting customers great prices.