What catastrophe have you averted recently? Any near-misses?

Last night I didn’t bother to turn the kitchen light on and wandered around in slides with leather bottoms. What was that slippery lump I almost tripped over?

One of my recurrent fantasies is stumbling on
a dead mouse and taking a header. Well, there he was, or there 90% of him was. Someone had taken a small nosh and left the rest in the traffic flow.