https://newatlas.com/nebra-anybeam-pocket-projector/59101/

Home cinema projectors may be capable of wall-filling 4K UHD visuals, but they are rather chunky and can be quite pricey. Handheld projectors can throw up TV-sized videos and movies at a watchable resolution for a fraction of the cost, while being small enough to fit in your pocket. Nebra's AnyBeam is one such portable projector, which is pitched as the world's smallest pocket cinema projector. And it comes in not one, but four variants, including a board for a Raspberry Pi and a funky sphere.