The first post was about rusty nails and wooden planks. So what would be the best thing that can be coupled together with that to make it more dangerous?

Introducing Hazard #2 - Deceptively level grounds that disguise deep holes.
Think of it as an evil version of one of those Kinder Surprise (you know, those chocolates with surprise toys in them) chocolates we used to get as kids. When you set foot into one of those holes, I couldn't have said it better than Forest Gump's mama, "You never know whatcha' gonna get!"
