A New York Times article last week about the rise of the Pop Up store noted that Toys “R” Us operated 33 such temporary stores in the tristate area last holiday season. Well, the Christmas crush will be on us before we know it, so it wasn’t surprising to hear a related rumor from a trusted source last week: That the toy giant was considering renting out the old Sid’s Hardware space at 345 Jay Street in Downtown Brooklyn. If we were in Forest City’s shoes, we’d be trying to close that deal.