The pregnancy side effect no one warns you about? Worryitis. The side effect of worryitis no one warns you about? It never goes away.We asked local children’s interior designer and green living guru Sarah Snyder for tips on creating a nontoxic nursery. So at least your bambino can rest easy.Slumber BasicsYour newborn will be a snoozer. As in, asleep much of the time. The most important purchase is a crib mattress made from organic cotton, wool, or natural latex. If too pricey, seal a standard-issue mattress (typically made with vinyl, phthalates, and polyurethane that off-gas) with an organic wool mattress cover and organic cotton crib sheet.Floors and WallsCarpets harbor pesticides, dander, and mold, so go for ick-free hardwood flooring and leave your shoes at the door. Add softness with natural-fiber area rugs (wool, cotton), and if you’re painting, use low- to no-VOC paint (applied by someone else, natch).Little ThingsBottles and sippies aren’t the only items that go straight into the mouths of babes. Opt for gear and playthings that are BPA free or made from nontoxic materials like sustainable hardwood or organic cloth. Avoid goods made from chemical-leaching and off-gassing plastics, especially numbers 1, 3, 6, and 7.Clean It UpToss the chemical cleaners and make your own. For cleaning everyday surfaces, mix equal parts water and vinegar in a spray bottle, spritz on, add baking soda (if there’s mold), let sit, then wipe off. Make a soft scrub by combining baking soda and castile soap; a furniture polish by shaking together a quarter cup of lemon juice and a half teaspoon of olive oil; and a bleach alternative from lemon juice or hydrogen peroxide. Don’t forget to clear the air each day by opening the windows.Then take a deep breath.For more from Sarah Snyder, call 415-290-6523 or go to littlebunny.net.Photo: Adi Nevo / Courtesy of Little BunnyHEARCinderella Ate My DaughterWhat: Feminist author (and local mom) Peggy Orenstein signs her new book to benefit About-Face.Why: You’re drowning in pink.When: Thurs., 7 p.m.Where: Books Inc., Opera Plaza, 601 Van Ness Ave., at Golden Gate Ave. (415-776-1111). Free admission and parking in the building.GOBay Model Visitor Center Grand ReopeningWhat: A first look at our neck of the woods and waterways, fully restored and in (roughly) 1:100 vertical scale.Why: Get some perspective.When: Sat., 11 a.m.-4 p.m.Where: Bay Model Visitor Center, 2100 Bridegeway, nr. Marinship Way, Sausalito (415-332-3871). Free.COLORModern-Twist’s Fun on the Golden Gate Kidz Place MatWhat: A reusable place mat, plus a set of washable markers for making it your own.Why: The bridge turns 75 this year.Where: Wink SF, 4107 24th St., at Castro St. (415-401-8881); SFMOMA Museum Store, 151 3rd St., b/t Mission & Howard Sts. (888-357-4000). Cost is $25.