Nothing secial, but mkes a great fun for kids. Just cut it from the thinnest translucent plastic you have (I used 1.5mm plexiglass but that is too thick) and glue the together into pyramid. Then go into dark and find a a hologramic video on youtube on your phone. Very quick and nice attraction 
I’m intrigued by your post. I’d like to see more information or photos on your concept… I’ve never seen a holographic video so will have to do some research. It sounds like a cool idea though.
I’ll post something more having a spare moment 
+1 here, Interesting!
i think it’s similar to this able: http://www.instructables.com/id/Amazing-3D-Projection-Pyramid-in-10-min-from-Clear/
Cool! Not what I had envisioned. I was expecting a 3D split image of some sort where you put the pyramid opening to the screen. I see how it works though.
Thanks Tadas
Nice work @Tadas_Mikalauskas . When I saw these holographic videos recently I was thinking along the lines of what you have done too, to make a laser cut pyramid for it.
@Coherent It’s actually pretty cool, check it out on youtube, https://www.youtube.com/watch?v=7YWTtCsvgvg
