Water Reactive Electroluminescent Panels
youtu.be
Ben Krasnow:https://www.youtube.com/watch?v=Z2o_Sp2-aBohttps://www.youtube.com/watch?v=eUUupR-ongsJeri Ellsworth:https://www.youtube.com/watch?v=HnoccQTCeMwh...

I got my hands on some really weird EL panels and did a little dive into how they work. I still have no idea where to get more but I think they may be DIY-able.