Start your Christmas off with a bang. Or a whistle. Or a bell. ”Sound is the most innovative thing for model trains in years,” says Mike Twiford, owner and manager of Mike’s Trainland in Suffolk.

Orange may go awesomely orange in September and October, due to all of the delightful pumpkins festooning the Irvine Park Railroad pumpkin patch, but things get mighty twinkly, and green and red, when ...