Recently I heard a rumor that after Death or rejoining the force or whatever you want to call it, some powerful Jedi can materialize. It apparently is a way for them to pass their wisdom on to other, even after death.
I had a little bit of leave coming to me and decided to act as a “ghost” hunter. I would find places strong with the force and snap a few photos.
I found a place deep on a forest moon and was able to find not one, but three ethereal Jedi. Not only were they ok with me trying to take their picture, but they even posed for me. I took 4 pictures before they disappeared. The jungle was dark and I hoped my flash bulbs worked well.
Back home, I swung by the Jedi Temple to use their dark room and show the Jedi what I had done. General Kenobi and Master Skywalker were with me when I developed the photos.
I looked at the two Jedi “but honest, I had pictures of ghost Jedi, they even posed for me!”
General Kenobi patted me on the shoulder to comfort me and said “It looked like the spirit was willing, but the flash was weak."