For times when the typical acrylic dome may be unappealing or violate local ordinances, the flat glass Sun Tunnel skylight lets in the sun well under the radar. Designed for rooms incompatible with a traditional skylight, the 14-inch light tunnel is prefabricated for easy installation in hallways, closets, stairways, bathrooms, or laundry rooms, says the manufacturer. 800.888.3589.