Air cleaning units containing an air filter, ultraviolet lights and a photocatalytic filter; Air purifiers for strollers; Combination ozone sanitizer and electric deodorizing units; Fans for HVAC units; Humidifiers for household purposes; Lights for illuminating stairs, doors and other portions of buildings; Reading lights; Tap-water purifying apparatus; Ultraviolet gel manicure lights; Vehicle-mounted air purifying apparatus; Water purification and filtration apparatus; Wearable air purifiers