you could just solder wires to the base/socket bit or remove the base/socket bit and join wires to the wires that were joined to the base/socket bit.
you could make a socket for it using a bit of wood, some screws, some wire, a metal bottle cap or somethng similar, see what youve got lying around.
busted elec appliances(microwave, fridge) with lights in them should have a socket you can remove and hook up to a power cord.