Check for pop up flea markets as well
This one is a mix of old and new art stuff
If I think of anymore I'll post them..
7533 S Crescent Blvd., Pennsauken, NJ
Goodwill at Red Lion and Bustleton in the NE. A little out of the city but very close- Heaven’s Treasures ( formerly Impact) at Bustleton and Street Roads and my favorite, though it is small, Bryan Athyn Thrift Store .
Bryn Mawr Hospital and Junior League Thrift shops will probably have more upscale items since they are located in fairly wealthy neighborhoods. Junior League is close to the Ardmore train station on the Paoli Thorndale line if you do not have a car.