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Homemade projector: Put your phone in front of a concave mirror, focus the image and it will project onto a wall.(r/lifehacks)
Aka makeup mirrors.
The kind that you look into and suddenly you can see stray hairs, wrinkles, pores, and flakes of dry skin and suddenly you realize what a doomed mortal creature you are, rife with decay and only the artifice of paints and salves can bring–however temporary– relief.