1. You need 19th century treats. Head to Lefferts Historic House for Open House New York: Sweet & Savory Treats from Mrs. Lefferts Cookbook. Lefferts Historic House at Prospect Park (Use entrance at Empire Boulevard and Flatbush and Ocean Avenues), 1 p.m. to 4 p.m. $1 per treat.
2. You need cupcakes, and a way to rationalize them. Head to the Obama Bash and Fundraiser at The Candy Rush, where there's free Blue Marble ice cream, BCakeNY cupcakes and live music with a minimum $10 on-site donation towards the Obama campaign. 735 Franklin Ave., bet. Park and Sterling. 10 am-1 pm.
3. You need to get the kids out of the house. If it's not raining, there are a bunch of great free activities for kids at Prospect Park including Nature on the Go!, nature-themed games for kids, from 1-2 at the Audubon Center, Nature's Helpers, helping to clean up the park, from 2-3 and the Discover Tour at 3. But if it's raining, as predicted, head to Greenlight Bookstore, 686 Fulton St., for Sunday Story Time for babies and toddlers ages 3 years and under. This week, The Good Ms. Padgett performs. 11 a.m. Free.
4. You need to know if your train is running ... It is! There are no planned service changes affecting Prospect Heights stations all weekend, according to the MTA.
5. ... and if you have to move your car. Not today of course, but not Monday either. Alternate side is suspended for Columbus Day and Shemini Atzereth, according to the NYCDOT.