Wood Real wood that is harvested sustainably is the purest for good indoor air quality. It’s fake counterparts: particle board, MDF,fake wood laminate all emit harmful chemicals into your indoor air quality. Yes, it requires specific care, but not anything unreasonable. Keep your wood furniture, floors and storage pieces dry and clean and they’ll last (almost) forever. I love wood toys for children. Some of the favorites of our kids we’ve had for over 15 years and they still have many years of life in them. No child, especially babies should be subjected to plastic toys with unknown paint finishes and chemical ingredients.