nestlé has developed the alarm cap, a limitededition 3d printed lid with powered electronics.seven different alarm sounds, including a bird song, work in tandem with a gently pulsing light to wake a sleeper in a natural and calming fashion. the user opens the lid to switch off the alarm and in turn is greeted with the refreshing, awakening smell of morning coffee.the base of the lid is made up of a fourway joystick and an oled display, powered by an arduino, while the lid itself is 3d printed in two parts.  the outside is made from nylon laser sintered by shapeways and the inside is fabricated by notlabs on their makerbot replicators.  the limited edition lids use 3d printing on both sides of the cap. the exterior is printed by shapeways, an emerging leader in additive manufacturing, using a material called nylon sls. the inner piece, which houses the electronics, designed by eric brockmeyer, is printed on a makerbot replicator.