It’s Halloween weekend. Booya. SHOP NaturalCandyStore.com What: New online shop sells natural, organic, and artificial-ingredient-free treats, like fair trade chocolate bites. Why: Trick or sweet. When: Before Oct. 31. Naturally. Where: Online at naturalcandystore.com BAKE Halloween Fondant Cake Class What: Learn to make and paint a cake with cobwebs, bones, and marzipan pumpkins. Why: Save broom for dessert. When: Sun., 2 p.m. Where: Vanille Patisserie, 2229 N. Clybourn Ave., at Webster Ave. (773-868-4574). SEE Lift Your Spirits What: Masquerade party showcases eerie photos from The Museum of Mourning Photography. Why: Get the picture. When: Thurs., 6-9 p.m. Where: Robin Richman, 2108 N. Damen Ave., at Dickens Ave. (773-278-6150). EAT $100 Maki Roll What: Super-robust combo of osetra caviar, Maine lobster, gold leaf, and toro. Why: You’re very witch. When: Mon. & Tues., 5-10 p.m.; Wed. & Thurs., 5-11 p.m.; Fri. & Sat., 5 p.m.-midnight; Sun., 4-10 p.m. Where: Blue Water Grill, 520 N. Dearborn St., at Grand Ave. (312-777-1400). HEAR The Decemberists’s The Long and Short of It Tour What: Portland indies play two shows. The first is prog rock; the second is poppy. Why: Double, double, toil, and trouble. When: Long of It, Sun., 7 p.m.; Short of It, Mon., 7 p.m. Where: The Vic Theatre, 3145 N. Sheffield Ave., at Belmont Ave. Tickets online at victheatre.com.