I like that idea, hopefully they don't take the train cars too, or knock them off the track. Happy Halloween and be safe.
My exact thoughts too!
"Hey, the guy 2 blocks over is giving out O Gauge trains!"
Of course, unless they have a relative who is into trains, most kids of trick or treating age will have no idea what they are, aside from (hopefully!) recognizing it as an old time train.
-Dave