Key organizing device including housing, cover, and slider. Housing includes cavity, two housing ends, end opening, back wall, and slider opening. Housing ends are spaced apart in longitudinal direction. End opening is located at one housing end. Back wall is located at other housing end. Slider opening extends in longitudinal direction. Cover is removeably attached over end opening. Slider includes finger pad and key mount. Key mount is positioned inside cavity and connected to finger pad through slider opening. Slider is configured for attachment and detachment of key through end opening upon removal of cover. Key including key head connected to key blade, key head having edge, key including head aperture spaced apart from the edge, key head including ramp between two guide ridges. Key including key head connected to key blade, key head having edge and head aperture, head aperture including notch in edge.