i take an emergency space blanket and a small first aid kit. I also
carry a light fleece change of clothing in a dry bag. i just leave that
in my hatch all the time.
that is what i carry on all my paddles.
if there is a chance (however remote) of being caught out after dark i
take two lights and some stuff to start a fire. cell phones work well
here and i take mine in a sealed sandwich bag.