You can turn your smartphone or tablet into a holographic projector as shown here: https://www.youtube.com/watch?v=7YWTtCsvgvg Here's another video that shows how to make these holographic videos: https://www.youtube.com/watch?v=hDRe4F_3TZ4 Just search YouTube on "hologram videos for pyramid" for more videos that play in this projector -- this channel has some interesting ones https://www.youtube.com/playlist?list=PLXlGmMC9MF5fcxKFZIs5uFJPVO0cvO58-

I constructed my own projector from CD cases as shown in the first YouTube clip for use on my tablet. I don't have Adobe Premier so I used the free video processing tool AviSynth to generate my holographic WAM video. The AviSynth code is given in the jpeg below. See my Green Screening post here https://umd.net/forums/fun-with-green-screening for info on the source video, how I changed the background to black, and AviSynth code in general.

Below is a gif of my holographic WAM video that works with the pyramid projector (7.6 MB). Also below is a gif showing the projector in action (7.54 MB).

If you want to skip the "green screening on to a black background" step, I've found that a decent hologram can be made from videos that have a nearly black background to start with (warning, there's sound on this one):

https://www.youtube.com/watch?v=lGOisB2_imc

All video content is from YouTube -- Lucy Lawless in a whipped cream bikini from "Xena: Warrior Princess" S06E20 "Soul Possession", the WamWatchers trailer "YCDTOTV Reagan" (with sound added from other clips), and Reshiel from her "slimed 99: A daring sliming" video on slimeathon's channel.

Really need to let my carpal tunnel rest before I pick this up again. May also get sheets of Perspex to make a bigger cleaner projector (see the second "how to" video in the first post). There are also premade ones on eBay. Carving out those pieces from old CD cases was pretty rough, lol. If you're wondering, my tablet hasn't suffered any scratches at all from the projector.