How much stuff has fell through these caboose steps through the years?

I can imagine coins dropping through the grate, and keys, and important notes, and small bolts and assorted hardware. And if the train is moving, it's gone forever. I thought it amazing to look through the grate and see the railroad bed. It would have been really terrific to stand there and watch the ties speed by as the train was moving. Reminds me of the deck grid on the Brookport, Illinois bridge over the Ohio River, except that the holes are nearly large enough for a soda can to drop through. It's a holey experience of another kind. Those who have fear of heights are reluctant to trust the near-invisibility of a bridge or a step that's held passengers for decades. I'd just hate to be the first to find out that security is just an illusion.