Tuesday saw the launch of three temporary art galleries in vacant Loop storefronts. Now comes the Opportunity Shop, an “ephemeral, experimental space” in Hyde Park. A community art project conceived as an “open invitation to everyone curious about the opportunities inherent in an otherwise vacant urban space for exhibition, performance, viewings, readings, workshops, and conversations,” the Op Shop opens tonight at 1613 E. 55th with a reception from 6 to 10 PM. There’ll also be a silent auction Sat 12/5 and a closing party Thu 12/31, both from 6 to 10 PM.