Trainfest takes place tomorrow and Sunday (Nov. 11 and 12) at State Fair Park. Trainfest is your once-a-year opportunity to let out your inner rail fan, immerse yourself into the world of model trains and introduce your kiddos to one of the world’s oldest forms of transportation; it’s a weekend full of interactive activities and displays geared toward every generation of train buff or foamer, as the jargon goes. It’s your family’s destination for all things trains. Ken Jaglinski is the trainfest chair. Greg and Jane Blau have an amazing LEGO train.