Pure Enrichment Crystal Himalayan Salt Rock Lamp and Ultrasonic Oil Diffuser Salt lamps give off negative ions to neutralise the harmful positive ones we're exposed to all day (from smartphones, TVs, and more). This Pure Enrichment Crystal Himalayan Salt Rock Lamp and Ultrasonic Oil Diffuser ($60) adds that power to an essential-oil diffuser to spread your favourite scent, or there's a basic Pure Enrichment USB Salt Lamp ($23) option, too. Image Source: target.com Pure Enrichment Crystal Himalayan Salt Rock Lamp and Ultrasonic Oil Diffuser $60 from target.com Buy Now Pure Enrichment USB Salt Lamp $23 from target.com Buy Now