BY SUSIE CURRIE — Can we ever have too many thrift stores? (Don’t answer that.) Caroline Sirri, a vendor at the Saturday flea market at Northwestern High School, has opened Fecosasa Consignment & Thrift Store at 4806 Rhode Island Avenue. Actually, at the moment it’s a thrift store only; Sirri, who opened the shop on December 24, says that consignments are not yet being accepted. For that, you can go to 4344 Farragut Street, where Misty Blu has hung out its shingle as a name-brand consignment store. It’s open Wednesday through Sunday, with no evening hours.