The nail polish world has slowly been modernizing with the reduction of harmful chemicals typically found in lacquer (formaldehyde, toluene, phthalates and bisphenol A, specifically), but many popular brands still contain these dangerous substances. To be on the safe side, why not spoil your loved ones with non-toxic, DIY nail polish? All you have to do is mix eye shadow or any other makeup powder into a bottle of water-based, non-toxic clear nail polish until you achieve the color you desire. DIY gifts don't come any easier.