I tested one of the most compact projectors on the market - and its best feature wasn't the size
Briefly

The Nebula Capsule Air projector is a portable device that excels in ruggedness and convenience, making it easy to watch videos anywhere with its innovative design.
Weighing just under three pounds, the Capsule Air’s dense construction supports its portability. Dropping this projector on anything but concrete likely won’t damage its internal components.
Although compact, the Capsule Air struggles with brightness; its 150 ANSI lumens require a very dark environment for optimal viewing, limiting its usability.
Experimenting with settings showed that the Picture Modes offered minimal differences, with the Movie mode being nearly indistinguishable from Standard mode, and Conference mode washing out colors.
Read at ZDNET
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