Help/advice needed for diy UV light for Amber searching

To answer your two main questions, I’d recommend LED Engin’s UV LED. djozz and Cereal_killer have done some experiments with it, and it’s probably the best UV led you can find.

As for UV blocking glasses, check out Uvex’s goggles. (Make sure to review spec sheets.) I have the Uvex Orange for UV and blue blocking purposes, and they do a great job without breaking the bank.