What's In That Hole?

There they go, a party of happy-go-lucky explorers seeking their fortune. Suddenly, a hole! Is that a glimmer of treasure deep within its recesses? Hm, there's a bend so they can't quite make out what's in there. Luckily, it's wide enough for someone's arm! All they need to do is reach in and the luscious treasure is all theirs! There's certainly nothing that could go wrong!

Be it in a floor, beneath a cracked tile, in a wall, or in a tree, there's nothing like a random hole to add flavor to the trek of your hapless adventurers. Tell your PCs that there's a hole, somewhere, then roll d100 as appropriate and enjoy the encounter; you've earned this.