pipe burst at midnight - what's in your toolbox?

Last night, around midnight, I hear this weird dripping sound coming from the kitchen. Half asleep, I stumble in there and step right into a puddle. Great. Turns out, a pipe under the sink decided to give up on life at the worst possible time. I scrambled around for tools, but all I found was duct tape and a wrench that's older than me. Got me thinking, what would you guys keep handy for these late-night plumbing disasters?