Bloble
You press your hand against the cold stone of the wall, feeling along for anything that seems off, your other hand sweeping against the straw on the floor as you crawl on your way, trying to find pressure plates and suspicious vibrations and all those sorts of things.
Though you expertly search all the way along your side of the corridor, the only trap you find is a still-active mouse trap right in front of one door. That door has a metal plate bolted to the masonry above it, engraved with the number 52.d20 roll = 16 + 6 = 22
At the door you listen, standing perfectly still while the rest of your party goes about their business. One ear is pressed to the wood of the door you've just stumbled across, almost getting splinters in your ear but not quite.
Your hearing sharpens, nearly muting out the rest of the world. You hear a dripping noise, steady, and you can tell by listening that it must have already formed at least a small pool in the room beyond. In addition, a strange clunk-clunk-clunk can be heard from the room, like something hollow being beat against rock.d20 roll = 19 + 2 = 21
-----------------
Lethum
The fly is annoying, but you swat at it after it leaves your eye, determined to fight against it.
It sticks around your face and you end up slapping yourself in your strange fit to get rid of the thing. There's now a bright red mark on your cheek, and your loud slap reverberated in the hallway. You hear the halfling yell at you for not being quiet, and when you try to find it again you realize that the fly has left, happily buzzing on its way as if nothing had happened.