+1 for life jacket. We lose too many good people at sea who would have been safe if they were wearing one. They are very comfortable and convenient to wear now, so there's no reason to not wear it.

But then, part of my mission as a volunteer is to rant about this... http://www.usps.org/localusps/marblehead/

Plus one for the cat, if they make such a thing...

People sometimes hang a thick rope, a bit like a cat's scratching pole, off the side of the boat, so the cat can get back on if it falls in the water. Some people even put some catnip on it to make the cat used to climbing up and down it.

Only useful when in harbour, of course...