Whether you use new furnishings or hand-me-downs, a little maintenance will go a long way toward creating the healthiest room for your baby.A few more things to remember: • Before you bring anything into the nursery, let it sit outside in a covered area or in a well-vented garage for a couple of weeks so that any potentially harmful chemicals can off-gas outside.• Wash everything you bring into the nursery — clothing, curtains, upholstery, changing pads, bumper pads, even the padding from car seats and swings — with a cup to a cup and a half of vinegar to remove flame-retardant chemicals.• Vacuum often with a HEPA filter or use a wet mop twice a week to minimize chemical particles that break off from textiles, finishes and electronics.• Check all hand-me-downs for rips, tears or chips, and repair or seal them right away.