You’re still trying to get the frosting out of the carpet, so it’s no wonder you’re tempted to do a disappearing act every time a birthday rolls around.This year, book a party at Trick Zone, where magicians perform slights of hand on their brand new stage bedecked with red velvet curtains.Pick from a range of packages for a stress-free solution. Silver and Gold include basic performances and refreshments. For the deluxe treatment, splurge on the Platinum with invites, favors, cake, and pizza.Which should keep everyone happy for a spell.Available at Trick Zone, 1050 North Hancock Street, the Piazza at Schmidts (267-455-0406 or trickzonephilly.com).CELEBRATEFall Equinox Festival What: Say hello to autumn with a day full of kid’s activities, music, and arts and crafts.Why: Leaf summer behind.When: Sat., 11 a.m.-sundown.Where: Clark Park, 43rd St. & Baltimore Ave.DISCOVERNature for the Young: Down on the Farm What: Tots (ages 18 months-4 years) take an outdoor romp and learn all about plants and veggies before they hit the table. Why: Cream of the crop.When: Fri., 1:30-3 p.m.Where: The Schuylkill Center for Environmental Education, 8480 Hagy’s Mill Rd. Register in advance at 215-482-7300 ext. 110.ACT UPArden Drama School Open House What: Kids get a behind-the-scenes look at the theater, take a miniclass, and find out the scoop on upcoming productions at this free event.Why: The world’s a stage.When: Sat., noon-2:30 p.m.Where: 40 N. Second St. To register, call 215-922-1122 or e-mail email@example.com.