People looking to put a train set under the Christmas tree this year, had a one stop shop to make that happen. The National Model Railroad Association Division 3 sponsored a Train Show and Swap Meet at the Allen County Fairgrounds Saturday afternoon.  The annual fundraiser for the association, brought in 50 vendors to sell a variety of sizes of model trains, some of the items are even considered antiques.   Organizers say while the train show brings out a lot of nostalgia in people, either remembering playing with trains themselves or of parent or grandparent spending time with their model trains, the hobby can have something for everyone.