I wanted to pick up doing holography again, but I discovered that Integraf, founded by legend TJ ( https://www.integraf.com/about/tung-h-jeong ), stopped selling the film and supplies.

Much of the supply chain for modern hobbyist holography was sourced out of Russia, and the ongoing wars have made those materials unavailable.

There are some newer processes out there, but there were probably thousands of us that grew up using those HoloKit holography kits distributed by TJ.