Need a last-minute handmade Valentine’s Day card or gift? Art Agency will have a Valentine’s “Pop-up Shop” in the 407 Gallery next Monday and Tuesday (Feb. 13 and 14). Hours are 10 a.m. to 3 p.m. both days. The 407 Gallery is located in Room 407 of the Studio Arts Building. The students promise baked goods, handmade cards, jewelry, scarves, hats and even small flower arrangements for sale. “Pop-up Shops,” we’re told, are all the rage in trendy urban centers where temporary sales spaces pop up in sometimes-unusual settings.