Ten birthday parties, a baby shower, and the upcoming holidays are threatening to leave you in the present-buying weeds.Have no fear, Gift Hero is here. The online gift-buying site just opened its first retail location inside Citibabes Soho. Carrying a carefully edited selection of gifts for children ages newborn to 6 years, the shop is arranged by age and stage for a painless and, dare we say it, pleasurable shopping experience.You’ll find playthings from the likes of Apple Park, EeBoo, Zolo, and The Piggy Story, picked by the mom/co-founders of Gift Hero, Lisa Fielding and Stefanie Katz Rothman, with input from Citibabes’s expert teachers.All purchases are bundled in Gift Hero’s ecofriendly, festive blue drawstring bags — leaving you looking like you’ve got this all wrapped up.Gift Hero at Citibabes, 52 Mercer Street, between Grand and Broome Streets, third floor (212-334-5440 or gifthero.com), $10-$60.PLAYDumbo Arts Festival What: This international arts extravaganza features everything from family yoga to crafting to kite flying.Why: A good way to stretch their interests.When: Sat. & Sun., noon-6 p.m.Where: Main St., b/t Water & Front Sts. Admission is free.EXPLOREOut on a LimbWhat: Kids discover the natural world through a series of tree houses, nest-building activities, and more.Why: Indoor fun that feels like the great outdoors.When: Sat.-Jan. 2. Tues.-Sun., 10 a.m.-5 p.m. Where: Brooklyn Children’s Museum, 145 Brooklyn Ave., Crown Heights (718-735-4400). Adults and children, $7.50.HEARDream Jam BandWhat: The fab four of kid music is back with songs from the latest album, Leave It in the Soup.Why: Wacky instruments and colorful costumes make this show a stunner.When: Sun., 11 a.m.Where: 92YTribeca, 200 Hudson St., at Canal St. (212-601-1000). Tickets ($15) online at 92y.org; children under 2, free.Photo: Courtesy of Gift Hero at CitibabesUp to 60% off Only HeartsHelena Stuart got her start (and her line’s name) selling heart-shaped goods in her little NYC shop. Good thing she branched out — her lacy, sexy-sweet underthings are so pretty, you’ll be dying to show them off. Take up to 60% off on Swirl.