Five Below, the five-bucks-and-under discount chain, is moving out of its longtime home at Federal Plaza. Doors will close in late February and the store will reopen further north on Rockville Pike, right next to Aldi at the Congressional North shopping center. Five Below caters to kids and teens, but adults can find plenty of bargains — from $5 phone chargers, iPad covers and party supplies to pillows, T-shirts and bath bombs.