We retrieved pennies we'd taped to the railroad track yesterday, some more smashed than others. We also gathered up some pieces of coal spilled from passing trains, thinking to have Cliff start a fire for us so we could see it burn. I vaguely remember, as a child, the smell of burning coal, and wanted to re-capture that. The fire might have been successful except that Monica started tossing objects into it when it was barely starting. I'll have to play with coal fires when the girls aren't here.
I think trains are much fewer on holiday weekends, because on my horseback rides and railroad adventures the last four days, there haven't been nearly as many.
A neighbor told me yesterday that nails are fun to smash on railroad tracks, too. So that'll probably be our next experiment.
Don't hold your breath until that one, though. My knees need a rest from hill-climbing and track-walking.