There's something nice about being able to carry around a compact portable projector that can also double as a 360-degree speaker. But what would you be willing to sacrifice for the convenience?
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The Anker Nebula is the combination of a portable projector with a 360-degree speaker. It can provide up to 30 hours of battery life in speaker mode on a single charge and is powered by Android.
Sony's Xperia Touch is a compact Android 7.0 device that projects its interface onto any flat surface, creating a 23-inch touch-sensitive display - but it promises just one hour of battery life.
Although you might have a smartphone and tablet, sometimes you want to enjoy content on a grander scale. Asus' latest ZenBeam E1 is a portable projector that can project content up to 120 inches.