Whether you’re looking for something to do with the kids, entertaining out-of-town relatives or just want someplace warm and relaxing to go over the holidays, stop by to see the poinsettia and garden railway exhibits at the Buffalo and Erie County Botanical Gardens, 2655 South Park Ave., Buffalo. Hours are 10 a.m. to 5 p.m. Monday through Sunday; 10 a.m. to noon Christmas Eve, Dec. 24; closed Christmas day, Dec. 25, and open 10 a.m. to noon New Year’s Eve,…