Tech-savvy moms Tori Cullen and Jen Gabrielli are streamlining the stoop sale with their first digitized kids’ consignment event. Consignors register online ($10 at FlashConsignment.com), print out bar codes, price and tag outgrown items and maternity clothes, and drop them off October 13. They can then log in to monitor which castoffs have sold and pocket 60 percent of proceeds. Sellers, volunteers, and expecting parents get first dibs (Judson Memorial Church, 55 Washington Sq. S., nr. Thompson St.; October 14–16).