Product designer Finn Magee uses advertising techniques to make what he calls critical objects, things that make you think. His fun and functional Flat Life life series—Flat Sound, Flat Time, Flat Light—employs various bits of skinny tech to make what look like flat, 2D posters actually work. Flat Sound lets you pump sound through your poster, with a 4mm thin Warwick Audio speaker. Flat Time uses a thin LED display. Flat Light uses LEDs. Simple and…effective.