Hologram -

Place the plastic pyramid upside down (small side down) in the center of the video playing on your smartphone.

Turn off the lights for the best effect, and watch the 3D image float. Pro-Tips for Better Visuals: Hologram

The darker the room, the more realistic the illusion. Place the plastic pyramid upside down (small side

(e.g., an animal, a word, a logo)?

Search YouTube for "3D hologram video" on your phone. These videos usually feature four identical images on a black background. the more realistic the illusion. (e.g.

Thin, rigid clear plastic from old packaging works best.