Hologram -

The darker the room, the more realistic the illusion.

On graph paper, draw a trapezoid with these dimensions for a standard phone: Base 6 cm, Top 1 cm, Height 3.5 cm. Hologram

Search YouTube for "3D hologram video" on your phone. These videos usually feature four identical images on a black background. The darker the room, the more realistic the illusion

I can give you more specific instructions or suggest the best YouTube videos to use! Hologram Kits - LitiHolo The darker the room