How to make a light-up crystal artifact

So if your high fantasy character is wandering through tangled forests, treacherous mountainsides, and haunted ruins, sooner or later they're going to stumble into some loot. Whether they are valuable resources, ensorcelled artifacts, or technology of a fallen civilization, something like this light-up crystal device could make a great prop for cosplay or for role-playing board games like Dungeons and Dragons. It also makes a nifty little light. For this project I was inspired by some posts on Pinterest, about light-up crystals that were based around tea-lights or other LED lights, made to be board pieces for roleplaying games. On the left is an unknown creator and unknown pin , but likely build up around a tea light. On the left is a project by Big Beekee Killa , an LED objective marker with a weight-sensitive trigger for the light. Because I have a fondness for and overabundance of puck lights, I decided to make this the base light source for my own version of these proje...